SUBASINGHE, T. N. The Effectiveness of Entonox When Comparing to Pethidine for Labor Pain:: A Systematic Review. Proceedings of the International Conference on Public Health, [S. l.], v. 5, n. 2, p. 8–18, 2020. DOI: 10.17501/23246735.2019.5202. Disponível em: http://tiikmpublishing.com/proceedings/index.php/icoph/article/view/378. Acesso em: 29 apr. 2024.