S. E. Sánchez, M. Carrión, E. Samatelo, R. Rodríguez-Zubiate, and M. Rodríguez, “Coverage of health insurance in relation with medical services use, living conditions and perceived health in Lima, Peru”, Rev Peru Med Exp Salud Publica, vol. 26, no. 2, Jun. 2009, doi: 10.17843/rpmesp.2009.262.1351.