Outcome of Prolapsed Chorioamniotic Membrane: Relationship between the Degree of Herniation, Infection, and Pregnancy Prolongation - Ishikawa, Kazuaki; Watanabe, Hiroshi; Tadokoro, Nozomu; Oshima, Kyoko; Nishikawa, Masayoshi; Inaba, Noriyuki (American Journal of Perinatology, 2003)