Sullón-Cuchupoma, C. L. (2020) “Quality of Care and Loyalty of External Users in Peruvian Ophthalmological Centers”, Jurnal Ners dan Kebidanan (Journal of Ners and Midwifery), 7(2), pp. 151–161. doi: 10.26699/jnk.v7i2.ART.p151-161.