OBJECTIVES To determine the ability of Bishop score and sonographic cervical length to predict time to spontaneous onset of labor and time to delivery in prolonged pregnancy. METHODS Ninety-seven women underwent transvaginal ultrasound examination and palpation of the cervix at 291-296 days' gestation according to ultrasound fetometry at 12-20 weeks' gestation. Sonographic cervical length and...

A holey perfect Mendelsohn design of type h n 1 1 h n 2 2 h n k k (HPMD(h n 1 1 h n 2 2 h n k k) with block size four is equivalent to a frame idempotent quasigroup satisfying Stein's third law with the same type, where a frame quasigroup of type h n 1

1. Kapikian AZ, Chanock RM. Rotaviruses. In: Fields BN Knipe DM Howley PM, editors. Fields Virology. 3 ed. Philadelphia: Lippincott-Raven, 1996:1657-1708. 2. Bishop RF. Natural history of human rotavirus infections. In: Kapikian AZ (ed). Viral infections of the gastrointestinal tract. 2nd ed. Marcel Dekker, New York, 1994:131-167. 3. Carlin JB, Chondros P, Masendycz P, Bugg H, Bishop RF, Barnes...

Bishop); Division of General Internal Medicine, Department of Medicine, Mount Sinai School of Medicine, New York (Dr Federman); and Division of General Internal Medicine, Department of Medicine, University of California, San Francisco, San Francisco Veterans Affairs Hospital, San Francisco (Dr Keyhani). Correspondence: Dr Bishop, Department of Public Health, Weill Cornell Medical College, 402 E...