IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-12-11-53411 Original Research Paper Congenital Visible Birth Defects At 31 Hospitals, Delhi Uppal Dr. Richa Nijhawan Dr. Sunil Kumar Polipalli Dr. Seema Kapoor Dr. November 2023 12 11 01 02