Prevalence of Atrial Septal Aneurysm in Patients With Migraine: An Echocardiographic Study. - Carerj, S.; Narbone, M. C.; Zito, C.; Serra, S.; Coglitore, S.; Pugliatti, P.; Luzza, F.; Arrigo, F.; Oreto, G. (Headache: The Journal of Head & Face Pain, 2003)