TY - JOUR AU - Schwerzmann, M; Wiher, S; Nedeltchev, K TI - Percutaneous closure of patent foramen ovale reduces the frequency of migraine attacks JO - Neurology VL - 62 PY - 2004 DO - 10.1212/01.WNL.0000120677.64217.A9 SP - 1399 EP - 1401 N1 - et al. ER -