Goyal, P., Kumar, D., Dixit, S., Srivastav, S., & Singh, A. (2016). Essential criteria for quality OPD services as perceived by patients in a tertiary care hospital in Faridabad City. International Journal of Research in Medical Sciences, 4(2), 441–445. https://doi.org/10.18203/2320-6012.ijrms20160292