Kannan, V., Sundar, S., Prabhu, S. M., & Ezhumalai, G. (2020). Estimation of the effects of music therapy on the anxiety and patient’s perception during an upper gastrointestinal endoscopy procedure: a randomised controlled trial. International Journal of Research in Medical Sciences, 8(7), 2594–2600. https://doi.org/10.18203/2320-6012.ijrms20202901