- R.K. Kotokey, Dibyajyoti Kalita, Roshan Agarwala, Shubham Purkayastha. Prevalence of Metabolic Syndrome in urban population of Dibrugarh town of upper Assam. Journal of Indian College of Cardiology. June 2013; 3 (2):52-56.
- R.K. Kotokey, Nayanjyoti Bez, Shubham Purkayastha, M.S. Chaliha. Study of cardiovascular manifestations in hypothyroidism. Indian Heart Journal. 2014; 66 (2): S117.
- R. K. Kotokey, S. Purkayastha. R. Agarwala. N. Bez. Study of Hypothyroidism with Special Reference to Cardiovascular Manifestations in Upper Assam. The Indian Practitioner. January 2016; Volume 69, Issue 1: Pages 22-29
- Ashish Kumar Jha, Praveen Jha, Rajeev Nayan Priyadarshi, Sanjeev Kumar Jha, Shubham Purkayastha, and Rakesh Kumar. Post-endoscopic retrograde cholangiopancreatography pneumothorax: Report of two cases and literature review. JGH open. December 2018; 2(6):329-332.
- Ashish Kumar Jha, Madhur Chaudhary, Vishwa Mohan Dayal, Amarendra Kumar, Sanjeev Kumar Jha, Praveen Jha, Shubham Purkayastha and Ravish Ranjan. Optimal cut-off value of fecal calprotectin for the evaluation of ulcerative colitis: An unsolved issue? JGH open. 2018 Oct; 2(5): 207-213.
- Praveen Jha, Amarendra Kumar, Vishwa Mohan Dayal, Sanjeev Kumar Jha, Ashish Kumar Jha, Ravish Ranjan, Shubham Purkayastha. Assessment of the utility of serum cystatin c as an early predictor of acute kidney injury in patients with acute-on- chronic liver failure: a prospective study. Journal of clinical and experimental hepatology. 2018 Jul; 8 (S1): S1-S2.
- Ashish K Jha, Praveen Jha, Madhur Chaudhary, Shubham Purkayastha, Sanjeev K Jha, Ravish Ranjan, Rajeev N Priyadarshi and Ramesh Kumar. Evaluation of factors associated with complications in amoebic liver abscess in a predominantly toddy-drinking population: A retrospective study of 198 cases. JGH Open. May 2019; doi:10.1002/jgh3.12183
- Sanjeev Kumar Jha*, Kuldeep Saharawat, Ravi Keshari, Praveen Jha, Shubham Purkayastha and Ravish RanjanAddition of Simvastatin to Carvedilol and Endoscopic Variceal Ligation improves rebleeding and survival in patients with Child-Pugh A and B class but not in Child Pugh C classAnnals of Clinical Gastroenterology and Hepatology. Annals of Clinical Gastroenterology and Hepatology; 2019 Aug 09; 3(1): 020-026.
- R. K. Kotokey, B. Vishu kumara, Roshan Agarwala, M. S. Chaliha, Shubham Purkayastha. A clinical study of Rheumatic Valvular Heart Disease in patients above forty years of age admitted in Assam Medical College and Hospital, Dibrugarh. Journal of Indian College of Cardiology. June 2014; 4 (2):90-94
- S. M. Baruah, R. Marak, R. K. Kotokey, B. C. Kalita, S. Purkayastha, R. Agarwala. A case report of Wilson's Disease with unusual presentation. Indian Medical Journal. December 2014; (supplement):52-53.
- Ashish Kumar Jha, Manish Kumar Mishra, Rakesh Kumar, Madhur Chaudhary, Shubham Purkayastha, Praveen Jha, Nazis Raza. Giant Gastroduodenal Trichobezoar: An Endoscopic Surprise. Journal of Digestive Endoscopy. 2018;9:131-133.
- Ashish Kumar Jha, Praveen Jha, Arya Suchismita, Shubham Purkayastha, Ravishn Ranjan. Dieulafoy's Lesion: An often Missed Endoscopic Diagnosis. Archives of Gastroenterology and Hepatology. 2018, 1(1):10-13
- Ashish Kumar Jha, Madhur Chaudhary, Praveen Jha, Uday Kumar, Vishwa Mohan Dayal, Sharad Kumar Jha, Shubham Purkayastha, Ravish Ranjan, Manish Mishra and Kuldeep Sehrawat. Polyethylene glycol plus bisacodyl: A safe, cheap, and effective regimen for colonoscopy in the South Asian patients. JGH Open. 2018 Aug ; 2: 249-254.
- Ravish Ranjan, Vishwa Mohan Dayal, Amarendra Kumar, Sanjeev Kumar Jha, Ashish Kumar Jha, Praveen Jha, Shubham Purkayastha. Urinary neutrophil gelatinase associated lipocalin as diagnostic marker of acute on chronic liver failure - a prospective study. Journal of clinical and experimental hepatology. 2018 Jul; 8 (S1): S2-S3.
- Jha SK, Mishra MK, Saharawat K, Jha P, Purkayastha S, Ranjan R. Comparison of concomitant therapy versus standard triple-drug therapy for eradication of Helicobacter pylori infection: A prospective open-label randomized controlled trial. Indian Journal of Gastroenterology. 2019; doi: 10.1007 s12664-019-00949-4
- Purkayastha, S, Jha, AK. Case Report: Primary hepatic tuberculosis masquerading as gall-bladder cancer. GastroHep. 2019; 1: 332 - 334.
- Jha AK, Purkayastha S, Dayal VM. Endoscopic Mucosectomy: A Novel Technique for Management of Polypoidal Solitary Rectal Ulcer Syndrome. ACG Case Reports Journal. 2021 Apr;8(4):e00563. DOI: 10.14309/ crj.0000000000000563.
