Negi, P CKanwar, AChauhan, RenuAsotra, SThakur, J SBharadwaj, A K2015-01-132015-01-132013-10Negi P C, Kanwar A, Chauhan Renu, Asotra S, Thakur J S, Bharadwaj A K. Authors’ response. Indian Journal of Medical Research. 2013 Oct; 138(4): 565.http://imsear.searo.who.int/handle/123456789/155063enArticle