MEDICAL COST AND OUT-OF-POCKET EXPENDITURE FOR PRETERM INFANTS: EVIDENCE FROM VIETNAM: Nguyen Thi Binh An1,2, Phuong Minh Hoang3, Phuc Huu Phan3, Peter van Eeuwijk1,2,4 and Günther Fink1,2. The Southeast Asian Journal of Tropical Medicine and Public Health, [S. l.], v. 50, n. 6, p. 1155, 2020. Disponível em: https://journal.seameotropmednetwork.org/index.php/jtropmed/article/view/49. Acesso em: 27 apr. 2026.