Mashal Siddiqui1 , Majid Ali Hingoro2 , Shomail Saeed Siddiqui3 , Jawad Mumtaz Sodhar4 , Palwasha Abbasi5 , Arooba Bhutto6 , Mehwish Kashif7 , Kashif Rasheed Shaikh8. “VITAMIN B12 LEVELS IN GENERAL ADULT POPULATION OF SINDH”. Journal of Peoples University of Medical &Amp; Health Sciences Nawabshah. (JPUMHS), vol. 11, no. 4, Dec. 2021, pp. 46-50, http://publication.pumhs.edu.pk/index.php/ojs/article/view/583.