Koirala NR, Das AK, Bhagat SK. The prevalence of mental retardation by gender, age, and age of diagnosis at Nobel Medical College, Biratnagar. J Nobel Med Coll [Internet]. 2012 Dec. 29 [cited 2024 Nov. 21];1(2):77-81. Available from: https://nepjol.info./index.php/JoNMC/article/view/7304