Rajiv Sarkar, Prabhu Sivarathinaswamy, Bhuvaneshwari Thangaraj, Kulandaipalayam Natarajan C Sindhu, Sitara Swarna R Ajjampur, Jayaprakash Muliyil, Vinohar Balraj, Elena N Naumova, Honorine Ward and Gagandeep Kang*
* Corresponding author: Gagandeep Kang gkang@cmcvellore.ac.in
BMC Public Health 2013, 13:87 doi:10.1186/1471-2458-13-87