SARIKA ARORA; BHAWNA SINGH; VINOD K GUPTA; MALLIKA VENKATESAN. BURDEN OF VITAMIN B12 DEFICIENCY IN URBAN POPULATION IN DELHI, INDIA: A HOSPITAL BASED STUDY. International Journal of Pharma and Bio Sciences, [S. l.], v. 2, n. 1, p. 521–528, 2011. Disponível em: https://ijpbs.net/index.php/journal/article/view/726. Acesso em: 3 sep. 2026.