SARIKA ARORA, BHAWNA SINGH, VINOD K GUPTA, MALLIKA VENKATESAN. BURDEN OF VITAMIN B12 DEFICIENCY IN URBAN POPULATION IN DELHI, INDIA: A HOSPITAL BASED STUDY. ijpbs [Internet]. 2011 Mar. 31 [cited 2026 Sep. 3];2(1):521-8. Available from: https://ijpbs.net/index.php/journal/article/view/726