Srinivasan A, Venkataraman S, Hansdak SG, Abraham OC, Mathai D. Hyperglycaemia as an indicator of concurrent acute pancreatitis in fulminant hepatic failure associated with hepatitis B infection. Singapore Med J. 2005 May;46(5):236-7. PMID: 15858694.

Mitra S, Gunasekaran K, Chacko G, Hansdak SG. Leprous neuromyositis: A rare clinical entity and review of the literature. Indian J Med Microbiol. 2016 Jan-Mar;34(1):95-7. doi: 10.4103/0255-0857.174120. PMID: 26776128.

Abhilash KP, Jeevan JA, Mitra S, Paul N, Murugan TP, Rangaraj A, David S, Hansdak SG, Prakash JA, Abraham AM, Ramasami P, Sathyendra S, Sudarsanam TD, Varghese GM. Acute Undifferentiated Febrile Illness in Patients Presenting to a Tertiary Care Hospital in South India: Clinical Spectrum and Outcome. J Glob Infect Dis. 2016 Oct-Dec;8(4):147-154. doi: 10.4103/0974-777X.192966. PMID: 27942194; PMCID: PMC5126753.

Sah SP, Joshi A, Hansdak SG. Fine needle aspiration of precursor B lymphoblastic leukemia in an adult presenting as disseminated skin nodules. Acta Cytol. 2005 May-Jun;49(3):349-50. PMID: 15966305.

Thomas K, Peter JV, Christina J, Jagadish AR, Rajan A, Lionel P, Jeyaseelan L, Yadav B, John G, Pichamuthu K, Chacko B, Pari P, Murugesan T, Rajendran K, John A, Sathyendra S, Iyyadurai R, Jasmine S, Karthik R, Mathuram A, Hansdak SG, Abhilash KP, Kumar S, John KR, Sudarsanam TD. Cost-utility in medical intensive care patients. Rationalizing ongoing care and timing of discharge from intensive care. Ann Am Thorac Soc. 2015 Jul;12(7):1058-65. doi: 10.1513/AnnalsATS.201411-527OC. PMID: 26011090.

Reji KK, Mathew V, Zachariah A, Patil AK, Hansdak SG, Ralph R, Peter JV. Extrapyramidal effects of acute organophosphate poisoning. Clin Toxicol (Phila). 2016 Mar;54(3):259-65. doi: 10.3109/15563650.2015.1126841. Epub 2016 Jan 6. PMID: 26735571.

Srinivasan A, Venkataraman S, Hansdak SG, Abraham OC, Mathai D. Hyperglycaemia as an indicator of concurrent acute pancreatitis in fulminant hepatic failure associated with hepatitis B infection. Singapore Med J. 2005 May;46(5):236-7. PMID: 15858694.

Mitra S, Gunasekaran K, Chacko G, Hansdak SG. Leprous neuromyositis: A rare clinical entity and review of the literature. Indian J Med Microbiol. 2016 Jan-Mar;34(1):95-7. doi: 10.4103/0255-0857.174120. PMID: 26776128.

Abhilash KP, Jeevan JA, Mitra S, Paul N, Murugan TP, Rangaraj A, David S, Hansdak SG, Prakash JA, Abraham AM, Ramasami P, Sathyendra S, Sudarsanam TD, Varghese GM. Acute Undifferentiated Febrile Illness in Patients Presenting to a Tertiary Care Hospital in South India: Clinical Spectrum and Outcome. J Glob Infect Dis. 2016 Oct-Dec;8(4):147-154. doi: 10.4103/0974-777X.192966. PMID: 27942194; PMCID: PMC5126753.

Sah SP, Joshi A, Hansdak SG. Fine needle aspiration of precursor B lymphoblastic leukemia in an adult presenting as disseminated skin nodules. Acta Cytol. 2005 May-Jun;49(3):349-50. PMID: 15966305.

Thomas K, Peter JV, Christina J, Jagadish AR, Rajan A, Lionel P, Jeyaseelan L, Yadav B, John G, Pichamuthu K, Chacko B, Pari P, Murugesan T, Rajendran K, John A, Sathyendra S, Iyyadurai R, Jasmine S, Karthik R, Mathuram A, Hansdak SG, Abhilash KP, Kumar S, John KR, Sudarsanam TD. Cost-utility in medical intensive care patients. Rationalizing ongoing care and timing of discharge from intensive care. Ann Am Thorac Soc. 2015 Jul;12(7):1058-65. doi: 10.1513/AnnalsATS.201411-527OC. PMID: 26011090.

Reji KK, Mathew V, Zachariah A, Patil AK, Hansdak SG, Ralph R, Peter JV. Extrapyramidal effects of acute organophosphate poisoning. Clin Toxicol (Phila). 2016 Mar;54(3):259-65. doi: 10.3109/15563650.2015.1126841. Epub 2016 Jan 6. PMID: 26735571.

Hansdak SG, Lallar KS, Pokharel P, Shyangwa P, Karki P, Koirala S. A clinico-epidemiological study of snake bite in Nepal. Trop Doct. 1998 Oct;28(4):223-6. doi: 10.1177/004947559802800412. PMID: 9803844.

Raj JP, Hansdak SG, Naik D, Mahendri NV, Thomas N. SLEep among diabetic patients and their GlycaEmic control (SLEDGE): A pilot observational study. J Diabetes. 2019 Feb;11(2):122-128. doi: 10.1111/1753-0407.12825. Epub 2018 Aug 12. PMID: 30003709.

Kurien T, Thyagarajan SP, Jeyaseelan L, Peedicayil A, Rajendran P, Sivaram S, Hansdak SG, Renu G, Krishnamurthy P, Sudhakar K, Varghese JC; STD Study Group. Community prevalence of hepatitis B infection and modes of transmission in Tamil Nadu, India. Indian J Med Res. 2005 May;121(5):670-5. PMID: 15937371.

Mishra AK, Kharkongor M, Kuriakose CK, George AA, Peter D, Carey RAB, Mathew V, Hansdak SG. Is Ross Syndrome an Autoimmune Entity? A Case Series of 11 Patients. Can J Neurol Sci. 2017 May;44(3):318-321. doi: 10.1017/cjn.2016.417. PMID: 28488950.

Mishra AK, Arvind VH, Muliyil D, Kuriakose CK, George AA, Karuppusami R, Benton Carey RA, Mani S, Hansdak SG. Cerebrovascular injury in cryptococcal meningitis. Int J Stroke. 2018 Jan;13(1):57-65. doi: 10.1177/1747493017706240. Epub 2017 Apr 19. PMID: 28421878.

Arora S, Nathaniel SD, Paul JC, Hansdak SG. Acute liver failure in dengue haemorrhagic fever. BMJ Case Rep. 2015 May 24;2015:bcr2015209443. doi: 10.1136/bcr-2015-209443. PMID: 26009600; PMCID: PMC4458622.

Arora S, Prakash TV, Carey RA, Hansdak SG. Poncet's disease: unusual presentation of a common disease. Lancet. 2016 Feb 6;387(10018):617-618. doi: 10.1016/S0140-6736(16)00157-4. PMID: 26867450.

Hansdak SG, Paulraj R. Are we doing harm by omission? Addressing religiosity of the mentally ill. World Psychiatry. 2013 Feb;12(1):40. doi: 10.1002/wps.20011. PMID: 23471798; PMCID: PMC3619164.

Karki P, Hansdak SG, Bhandari S, Shukla A, Koirala S. A clinico-epidemiological study of organophosphorus poisoning at a rural-based teaching hospital in eastern Nepal. Trop Doct. 2001 Jan;31(1):32-4. doi: 10.1177/004947550103100112. PMID: 11205599.

Koshy M, Mishra AK, Agrawal B, Kurup AR, Hansdak SG. Dengue fever complicated by hemophagocytosis. Oxf Med Case Reports. 2016 Jun 1;2016(6):121-4. doi: 10.1093/omcr/omw043. PMID: 27274854; PMCID: PMC4887830.

Rajendra A, Koshy M, Mishra AK, Hansdak SG. Lithophagia: Presenting as spurious diarrhea. J Family Med Prim Care. 2016 Apr-Jun;5(2):499-500. doi: 10.4103/2249-4863.192328. PMID: 27843877; PMCID: PMC5084597.

Mani SSR, Gunasekaran K, Iyyadurai R, Prakash JAJ, Veeraraghavan B, Mishra AK, Sabnis K, Victor PJ, Martin S, Chandiraseharan VK, Hansdak SG, Varghese GM. Clinical spectrum, susceptibility profile, treatment and outcome of culture-confirmed brucellosis from South India. Indian J Med Microbiol. 2018 Apr-Jun;36(2):289-292. doi: 10.4103/ijmm.IJMM_18_236. PMID: 30084427.

Karki P, Koirala S, Parija SC, Hansdak SG, Das ML. A thirty day course of sodium stibogluconate for treatment of Kala-azar in Nepal. Southeast Asian J Trop Med Public Health. 1998 Mar;29(1):154-8. PMID: 9740292.

Thomas VV, Kumar SE, Alexander V, Nadaraj A, Vijayalekshmi B, Prabhu S, Kumar S, Murugabharathy K, Thomas SM, Hansdak S, Carey R, Iyyadurai R, Pichamuthu K, Abhilash KPP, Varghese GM, Nair S, Goel A, Jeyaseelan L, Zachariah U, Zachariah A, Eapen CE. Plasma Von Willebrand Factor Levels Predict Survival in COVID-19 Patients Across the Entire Spectrum of Disease Severity. Indian J Hematol Blood Transfus. 2021 Jun 20:1-8. doi: 10.1007/s12288-021-01459-0. Epub ahead of print. PMID: 34177141; PMCID: PMC8214842.

Arpudh Michael Anandaraj, Kishore Kumar Pichamuthu, Samuel George Hansdak, Prasanna Samuel, Aparna Irodi, Sniya Valsa, John Victor Peter A Randomised Controlled Trial of Lactobacillus in the Prevention of Ventilator Associated Pneumonia Journal of Clinical and Diagnostic Research. 2019 Aug, Vol-13(8): OC21-OC24 Link

George T, Rajan SJ, Peter JV, Hansdak SG, Prakash JAJ, Iyyadurai R, Mathuram A, Antonisamy B, Ramanathan K, Sudarsanam TD. Risk Factors for Acquiring Scrub Typhus among the Adults. J Glob Infect Dis. 2018 Jul-Sep;10(3):147-151. doi: 10.4103/jgid.jgid_63_17. PMID: 30166814; PMCID: PMC6100342.

Raj Mani SS, Iyyadurai R, Mishra AK, Manjunath K, Prasad J, Lakshmanan J, Yadav B, Reginald A, Jasmine S, Hansdak SG, Zachariah A. Predicting antitubercular drug-induced liver injury and its outcome and introducing a novel scoring system. Int J Mycobacteriol. 2021 Apr-Jun;10(2):116-121. doi: 10.4103/ijmy.ijmy_15_21. PMID: 34558461.

Jacob MS, Iyyadurai R, Jose A, Fleming JJ, Rebekah G, Zachariah A, Hansdak SG, Alex R, Chandiraseharan VK, Lenin A, Peter JV. Clinical presentation of type 1 and type 2 pyrethroid poisoning in humans. Clin Toxicol (Phila). 2021 Oct 21:1-8. doi: 10.1080/15563650.2021.1994145. Epub ahead of print. PMID: 34672857.

Kaswala C, Schmiedel Y, Kundu D, George MM, Dayanand D, Devasagayam E, Manesh S A, Kumar SS, Michael JS, Ninan MM, Chacko G, Zachariah A, Sathyendra S, Hansdak SG, Iyadurai R, Christopher DJ, Gupta R, Karthik R, Abraham OC, Varghese GM. Accuracy of Gene Xpert MTB/RIF Ultra for the diagnosis of tuberculosis in adult patients: A retrospective cohort study. Int J Infect Dis. 2022 Jul 7:S1201-9712(22)00410-6. doi: 10.1016/j.ijid.2022.07.016. Epub ahead of print. PMID: 35811084.

Cherian LM, Varghese L, Rupa V, Bright RR, Abraham L, Panicker R, R N, Peter J, Nayak A, Shyam A, Varghese GM, Manesh A, Karuppusami R, George K, George T, Lenin A, Hansdak SG, I R, Michael JS, Ninan M, Thomas M, Kurian R, Mammen S, Kurien R. Rhino-orbito-cerebral mucormycosis: patient characteristics in pre-COVID-19 and COVID-19 period. Rhinology. 2022 Dec 1;60(6):427-434. doi: 10.4193/Rhin22.099. PMID: 36150158.

Arthur M, Pichamuthu K, Turaka VP, Putta T, Jeeyavudeen MS, Zachariah A, Sathyendra S, Hansdak SG, Iyadurai R, Karuppusami R, Sudarsanam TD. Bedside lung ultrasonography: comparison with chest radiography (BLUR), a diagnostic study in a developing country. Postgrad Med J. 2022 Sep 14:postgradmedj-2021-141343. doi: 10.1136/pmj-2021-141343. Epub ahead of print. PMID: 36104167.

Cherian LM, Varghese L, Rupa V, Bright RR, Abraham L, Panicker R, R N, Peter J, Nayak A, Shyam A, Varghese GM, Manesh A, Karuppusami R, George K, George T, Lenin A, Hansdak SG, I R, Michael JS, Ninan M, Thomas M, Kurian R, Mammen S, Kurien R. Rhino-orbito-cerebral mucormycosis: patient characteristics in pre-COVID-19 and COVID-19 period. Rhinology. 2022 Dec 1;60(6):427-434. doi: 10.4193/Rhin22.099. PMID: 36150158.

Manesh A, Shankar C, George MM, Jasrotia DS, Lal B, George B, Mathews V, Eapen CE, Joseph P, Subramani K, Rao S, Peter JV, Chacko B, Zachariah A, Sathyendra S, Hansdak SG, Abraham OC, Iyadurai R, Vijayakumar S, Karthik R, Marwick CA, Parcell BJ, Gilbert IH, Veeraraghavan B, Varghese GM. Clinical and Genomic Evolution of Carbapenem-Resistant Klebsiella pneumoniae Bloodstream Infections over Two Time Periods at a Tertiary Care Hospital in South India: A Prospective Cohort Study. Infect Dis Ther. 2023 May;12(5):1319-1335. doi: 10.1007/s40121-023-00803-3. Epub 2023 Apr 16. PMID: 37062023; PMCID: PMC10229510.

Kaswala C, Schmiedel Y, Kundu D, George MM, Dayanand D, Devasagayam E, S AM, Kumar SS, Michael JS, Ninan MM, Chacko G, Zachariah A, Sathyendra S, Hansdak SG, Iyadurai R, Christopher DJ, Gupta R, Karthik R, Abraham OC, Varghese GM. Accuracy of Xpert MTB/RIF Ultra for the diagnosis of tuberculosis in adult patients: a retrospective cohort study. Int J Infect Dis. 2022 Sep;122:566-568. doi: 10.1016/j.ijid.2022.07.016. Epub 2022 Jul 8. PMID: 35811084.

Das S, Bandyopadhyay R, Hansdak SG. Case report of infective spondylodiscitis due to nalidixic acid-resistant Salmonella paratyphi A. J Family Med Prim Care. 2021 Jan;10(1):554-557. doi: 10.4103/jfmpc.jfmpc_1243_20. Epub 2021 Jan 30. PMID: 34017788; PMCID: PMC8132842.

Kundu, Debasreea;Gautam, Priyankaa;Dayanand, Divyaa;Gunasekaran, Karthikb;Manesh, Abia;Sebastian, Merylina;Abhilash, Kundavaram P. P.c;Zachariah, Anandb;George, Tinab;Sathyendra, Sowmyab;Hansdak, Samuel G.b;Abraham O.C.b The role and diagnostic accuracy of serology for COVID-19 BMC Infectious DiseasesOpen AccessVolume 22, Issue 1December 2022

Ratinam J, Mishra AK, Muthuram AJ, Miraclin A, Chandy GM, Vanjare HA, Turaka VP, Jude J, Hansdak SG, Iyadurai R. Role of cerebrospinal fluid C-reactive protein in tuberculous meningitis. Int J Mycobacteriol. 2020 Oct-Dec;9(4):422-428. doi: 10.4103/ijmy.ijmy_178_20. PMID: 33323659.

Kundu D, Gautam P, Dayanand D, Gunasekaran K, Manesh A, Sebastian M, Abhilash KPP, Zachariah A, George T, Sathyendra S, Hansdak SG, Abraham OC, Iyadurai R, Thangakunam B, Gupta R, Karthik R, Moorthy M, Varghese GM. The role and diagnostic accuracy of serology for COVID-19. BMC Infect Dis. 2022 Apr 19;22(1):390. doi: 10.1186/s12879-022-0736-1y. PMID: 35439957; PMCID: PMC9017961.

Mohammad Sadiq Jeeyavudeen, Samuel George Hansdek, Nihal Thomas, Thangakunam Balamugesh, Mahasampath Gowri, Thomas V. Paul Bone health in ambulatory male patients with chronic obstructive airway disease – A case control study from India Aging Medicine First published: 12 January 2023 https://doi.org/10.1002/agm2.12239

Mathansingh AJ, Jose A, Fleming JJ, Abhilash KPP, Chandiraseharan VK, Lenin A, Hansdak SG, Iyyadurai R, Mani T, Peter JV, Eddleston M, Zachariah A. Quantification of Organophosphorus Insecticide Removed by Gastric Lavage in Acutely Poisoned Patients: An Observational Study. Indian J Crit Care Med. 2023 Jun;27(6):397-402. doi: 10.5005/jp-journals-10071-24475. PMID: 37378371; PMCID: PMC10291665.

Dutta AK, Danda S, Muthusamy K, Alexander M, Sudhakar SV, Hansdak S, Bandyopadhyay R, Bakhya Shree GB, Rekha L. Cerebrotendinous xanthomatosis: Possibility of founder mutation in CYP27A1 gene (c.526delG) in Eastern Indian and Surinamese population. Mol Genet Metab Rep. 2015 Mar 23;3:33-5. doi: 10.1016/j.ymgmr.2015.03.002. PMID: 26937392; PMCID: PMC4750635.

Kannan K, John R, Kundu D, Dayanand D, Abhilash KPP, Mathuram AJ, Zachariah A, Sathyendra S, Hansdak SG, Abraham OC, Gunasekaran K, Iyadurai R, Abraham AM, Prakash JAJ, Yesudhason BL, Veeraraghavan B, Kavitha ML, Jose LR, Sumana MN, Saravu K, Varghese GM. Performance of molecular and serologic tests for the diagnosis of scrub typhus. PLoS Negl Trop Dis. 2020 Nov 12;14(11):e0008747. doi: 10.1371/journal.pntd.0008747. PMID: 33180784; PMCID: PMC7660479.

S B MJ, Chacko B, Selvarajan S, Peter JV, Geevar T, Dave RG, Georgy JT, Zachariah A, George T, Sathyendra S, Hansdak SG, Krishnaswami RK, Thangakunam B, Gupta R, Karuppusami R, Nair SC, Srivastava A. Biomarkers of coagulation, endothelial, platelet function, and fibrinolysis in patients with COVID-19: a prospective study. Sci Rep. 2024 Jan 23;14(1):2011. doi: 10.1038/s41598-024-51908-9. PMID: 38263377; PMCID: PMC10805716.

George, Tarun K et al. “The economic impact of a COVID-19 illness from the perspective of families seeking care in a private hospital in India.” Dialogues in health vol. 2 (2023): 100139. doi:10.1016/j.dialog.2023.100139

Stanley ND, Jeevan JA, Yadav B, Gunasekaran K, Pichamuthu K, Chandiraseharan VK, Sathyendra S, Hansdak SG, Iyyadurai R. Association of antibiotic duration and all-cause mortality in a prospective study of patients with ventilator-associated pneumonia in a tertiary-level critical care unit in Southern India. BMJ Open. 2024 Apr 11;14(4):e077428. doi: 10.1136/bmjopen-2023-077428. PMID: 38604633; PMCID: PMC11015278.

Daniel DM, Hansdak SG, George T, Thomas SM, Balachandran A, Vanjare HA, Samuel P, Iyadurai R. Clinical Profile, Outcomes, and Predictors of Outcomes in Patients with Tuberculosis with Arachnoiditis. Int J Mycobacteriol. 2025 Apr 1;14(2):126-131. doi: 10.4103/ijmy.ijmy_29_25. Epub 2025 Jun 20. PMID: 40540656.

Neeraj GP, Philip AJ, Prakash G, Praneeth CS, Chandiraseharan VK, Zachariah A, Rajan SJ, Nellickal AJ, Iyyadurai R, Pichamuthu KK, Hansdak SG, Gunasekaran K, Abhilash KP, Peter JV, Yadav B. Paraquat Peril: A Retrospective Study from the Frontlines of a Quaternary Care Hospital in South India. Indian J Crit Care Med. 2026 Feb;30(2):107-116. doi: 10.5005/jp-journals-10071-25131. Epub 2026 Feb 13. PMID: 41868073; PMCID: PMC12999658. Link