Siddique, Muhammad, Muhammad Parvez, Humaira Zafar, Awais Mustafa, and Anam Shafi. “Prevalence of Vitamin B12 Deficiency in Hypothyroid Patients”. Annals of Punjab Medical College (APMC) 11, no. 3 (August 27, 2017): 252-256. Accessed April 19, 2024. https://apmcfmu.com/index.php/apmc/article/view/206.