Avoiding pitfalls in diagnosing basilar artery occlusive disease: clinical and imaging clues - case report - Conforto, Adriana Bastos; Ciríaco, Jovana Gobbi Marchesi; Yamamoto, Fábio Iuji; Puglia Júnior, Paulo; Leite, Claudia da Costa; Martin, Maria da Graça Morais; Scaff, Milberto (São Paulo Medical Journal, 2010)