SARIKA ARORA, BHAWNA SINGH, VINOD K GUPTA, and MALLIKA VENKATESAN. “BURDEN OF VITAMIN B12 DEFICIENCY IN URBAN POPULATION IN DELHI, INDIA: A HOSPITAL BASED STUDY”. International Journal of Pharma and Bio Sciences 2, no. 1 (March 31, 2011): 521–528. Accessed September 3, 2026. https://ijpbs.net/index.php/journal/article/view/726.