Rao Krishna D, Sundararaman T
Public Health Foundation of India, ISID Campus, Vasant Kunj Institutional Area, New Delhi 110070, India.
National Health Systems Resource Center, Ministry of Health and Family Welfare, Government of India, India.
Soc Sci Med. 2014 Feb;102:203-4. doi: 10.1016/j.socscimed.2013.11.053. Epub 2013 Dec 21.