Union Health Minister Mansukh Mandaviya has said the government is working to equal the number of undergraduate and postgraduate medical seats within four years so that all MBBS graduates can pursue PG courses.

Speaking at the 13th annual conference of the Global Association of Physicians of Indian origin (GAPIO) here on Saturday, Mandaviya also invited healthcare professionals from the Indian diaspora to invest in research and open hospital chains in the country with "assured business."