Mehra, A., N. K. Goel, D. Kumar, and S. Bhattacharya. “Evaluation of Health Care Services in Health Centres Attached to a Tertiary Care Hospital in Northern India”. International Journal Of Community Medicine And Public Health, vol. 3, no. 11, Dec. 2016, pp. 3033-9, doi:10.18203/2394-6040.ijcmph20163906.