Dr Vinod Paul is an internationally renowned paediatrician, academic, medical researcher and public health exponent, especially newborn health. A member of NITI Aayog, he leads the health and nutrition verticals. In a conversation with Damayanti Datta, Dr Paul talks about healthcare initiatives such as Ayushman Bharat and Poshan Abhiyaan, and how to resolve the problem of malnutrition. Edited excerpts: