Authors’ contributions
DELHI
BW & VM were chief investigators of the study and responsible for all trial related activities. BW, VM, SK, FH, NP, KS, VS contributed to the implementation of the study and all study related activities in Delhi. KF, AM, JA, AB, contributed to study support and resource allocation. TQ, LF analysed the blinded data. TQ, LF, BM, MS-H, CE and KD contributed to the interpretation of the data. All authors assisted with the writing of the paper and reviewed and approved the final manuscript.