ถ่างกระโทก ป. Patient Referral Systems: key processes of health services management. Journal of Medicine and Health Sciences, [S. l.], v. 25, n. 3, p. 109–121, 2018. Disponível em: https://he01.tci-thaijo.org/index.php/jmhs/article/view/163736. Acesso em: 11 oct. 2026.