title: Authors' response.
authors.affiliation: Department of Operational Research, National Institute for Research in Reproductive Health (ICMR), Mumbai 400 012, Maharashtra, India.
authors.forename: Sanjay
authors.initials: S
authors.lastname: Chauhan
authors.affiliation: Department of Operational Research, National Institute for Research in Reproductive Health (ICMR), Mumbai 400 012, Maharashtra, India.
authors.forename: Ragini
authors.initials: R
authors.lastname: Kulkarni
authors.affiliation: United Nations Population Fund, New Delhi, India.
authors.forename: Dinesh
authors.initials: D
authors.lastname: Agarwal