HAMMAD RAZIQ; HUMAIRA FAYYAZ; RABIA AZHAR; AZMAT HAYYAT; SOBIA WAQAS. Association of serotonin levels in patients of vasovagal syncope and postural tachycardia syndrome. Journal of the Pakistan Medical Association, [S. l.], p. 1–10, 2021. DOI: 10.47391/JPMA.053. Disponível em: https://mail.jpma.org.pk/index.php/public_html/article/view/728. Acesso em: 19 apr. 2026.