Yasunga Y, Nagai K, Matsuura N, Yamai T, Ikezoe M, Shiraishi E, Yanagawa K, Nishihara T, Inui Y, Kohro T, Nishikawa M. Nippon Shokakibyo Gakkai Zasshi. 2009 oct;106(10):1508-15
Departamento de Medicina Interna, Hospital Nishinomiya de la Prefectura de Hyogo.