Eligible pregnant women will be randomly allocated to one of two parallel groups (experimental and control, 1:1 ratio), using a computer-generated stratified block randomization that is done by one of the co-investigators (HT) who is not involved in subject recruitment. The size of blocks will vary from 4 to 8 and the stratification will be by study site. Allocation concealment will be done to ensure that group assignment of the patients are revealed only after assessing the inclusion/exclusion criteria are verified and consent obtained. This will be done to avoid any bias that might be introduced by the investigator because of the knowledge of the next allocation group. A set of sequentially numbered opaque sealed envelopes will be prepared with the allocation group, as per the randomization list, specified inside.