Ahmad, S., T. Baqar, S. Singh, S. Wasim, S. Shukla, and H. Parveen. “Placebo Effect Unboxed: A Review”. Asian Journal of Research in Medical and Pharmaceutical Sciences, Vol. 10, no. 4, Dec. 2021, pp. 15-21, doi:10.9734/ajrimps/2021/v10i430172.