Dr. Nirmal Verma, Mr. Swapnil Shinkar, Dr. Kamlesh Jain. Item test analysis to assess the difficulty index for biostatistics, epidemiology, and demography module of undergraduate medical students of Raipur, Chhattisgarh, India. Public Health Rev: Int J Public Health Res [Internet]. 2020Dec.30 [cited 2024Apr.25];7(6):66-0. Available from: https://publichealth.medresearch.in/index.php/ijphr/article/view/150