Lally Hanna Luke, Anandhi D, Shiva Kumar K, Valli G, Revathi K and Binoy Varghese Cheriyan 2021. Assessment of Serum Vitamin D, Folic acid and Vitamin B12 in Congenital Heart Disease Patients in a Teritary Hospital. International Journal of Research in Pharmaceutical Sciences. 12, 1 (Feb. 2021), 844–848.