UERPAIROJKIT, K.; SRITURAVANICH, W.; SONGTHAMWAT, B.; KAMPITAK, W.; NANTAPAK, T.; KHARURAM, P. Prospective randomized study of preprocedural ultrasound scan for spinal anesthesia 1 comparison between using 2nd prototype of PASS and skin marking technique to locate needle entry point. Thai Journal of Anesthesiology, [S. l.], v. 48, n. 1, p. 1–8, 2022. Disponível em: https://he02.tci-thaijo.org/index.php/anesthai/article/view/255816. Acesso em: 1 oct. 2026.