Episodic migraine associated with postural orthostatic tachycardia syndrome and vasovagal syncope: migraine triggers neuromediated syncope - Piovesan, Elcio Juliato; Sobreira, Cláudia Ferreira da Rosa; Scola, Rosana Herminia; Lorenzoni, Paulo José; Lange, Marcos Christiano; Werneck, Lineu Cesar; Smith, Débora; Silberstein, Stephen (Arquivos de Neuro-Psiquiatria, 2008)