Funding
The trial was funded by Roche Diagnostics Ltd. The study protocol was designed by the investigators and reviewed by the funder. The funder had no role in data collection or data analysis or final article approval. The authors analysed and interpreted the data and wrote the article. All authors were independent of the funders.
Details of ethics approval :
the study was approved by ethics committee for human research (ECHR), Lady Hardinge Medical College, New Delhi, ref no LHMC/ECHR/126