Following Dr Acharya's posting, I happened to surf Wellcome Trust website.
It is very interesting to see that one of the authors is the director of the Vietnam Unit and the replier to my posting in PLoS website is the director of the Southeast Asia Unit of Wellcome Trust.
You may recall that this study was funded by the Wellcome Trust.
Now, I will leave this to the readers to decide whether this amounts to Professional Conflict of Interest, which is not declared and repeatedly refuted by the Principal Investigators.
Read attached file which was published in the BMJ. Visit following section of PLoS website on
"Conflict of Interest" too.