RAMU, K. An estimation of willingness to pay for secondary health care services in Tamil Nadu, India. International Journal of Health, [S. l.], v. 5, n. 1, p. 12–19, 2016. DOI: 10.14419/ijh.v5i1.6542. Disponível em: https://sciencepubco.com/index.php/IJH/article/view/6542.. Acesso em: 21 nov. 2024.