Study of awareness towards a more accepted invasive procedure, Transvaginal ultrasound during the first trimester of pregnancy in a rural setup. Asian Journal of Pharmaceutical and Health Sciences, [S. l.], v. 5, n. 1, p. 1179–1181, 2015. Disponível em: https://ajphs.com/index.php/ajphs/article/view/408. Acesso em: 31 jan. 2026.