Sullón-Cuchupoma, C. L., Meneses-La-Riva, M. E., Fernández-Bedoya, V. H., & Suyo-Vega, J. A. (2020). Quality of Care and Loyalty of External Users in Peruvian Ophthalmological Centers. Jurnal Ners Dan Kebidanan (Journal of Ners and Midwifery), 7(2), 151–161. https://doi.org/10.26699/jnk.v7i2.ART.p151-161