Portal Vein Thrombosis Repeatedly Observed in a Cirrhotic Patient with Antiphospholipid Antibody Syndrome - Ohe, Mari; Mutsuki, Taishi; Goya, Takeshi; Yamashita, Shinsaku; Satoh, Takeaki; Kohjima, Motoyuki; Kato, Masaki (Fukuoka igaku zasshi = Hukuoka acta medica, 2016)