Ars CL, Nijs 1M, Marroun HE, et al: Prenatal folate, homocysteine and vitamin B12 levels and child brain volumes, cognitive development and psychological functioning: the Generation R Study. Br J Nutr 22: 1, 20e16 Barker OJ, Osmond C, Law CM: he intrauterine and early postnatal origins of cardiovascular disease and chronic bronchitis. J Epidemiol Community Health 43:237, 1989 Bartellas E, Crane JM, Daley M, et al: Sexuality and sexual activity in pregnancy. BJOG 107:964,e2000 Bech BH, Obel C, Henriksen TB, et al: Efect of reducing cafeine intake on birth weight and length of gestation: randomized controlled trial. BMJ 335:409,e2007 Berg q, Callaghan M, Syverson C, et al: Pregnancy-related mortality in the United States, 1998 to 2005. Obstet GynecoIe1l6(6):1302, 2010 Berggren EK, Groh-Wargo S, Presley L, et al: Maternal fat, but not lean, mass is increased among overweight/obese women with excess gestational weight gain. Am J Obstet GynecoIe214(6):745.e1, 2016 Bergsj0 P, Denman OW III, Hofman HJ, et al: Duration of human singleton pregnancy. A population-based study. Acta Obstet Gynecol Scand 69: 197, 1990 Berlin 1, Grange G, Jacob N, et al: Nicotine patches in pregnant smokers: randomized, placebo controlled, multicentre trial of eicacy. BMJ 348:g1622, 20e14 Bernhardt TL, Goldmann RW, Thombs PA, et al: Hyperbaric oxygen treatment of cerebral air embolism from orogenital sex during pregnancy. Crit Care Med 16:729, 1988 Bleich AT, Sheield JS, Wendel GO Jr, et al: Disseminated gonococcal infection in women. Obstet GynecoIe119(3):597, 2012 Bodnar LM, Simhan HN, Powers RW, et al: High prevalence of vitamin 0 insuiciency in black and white pregnant women residing in the northern United States and their neonates. J Nutr 137(2)e:447, 2007
Borrelli F, Capasso R, Aviello G, et al: Efectiveness and safety of ginger in the treatment of pregnancy-induced nausea and vomiting. Obstet Gynecol 105:849,e2005
Branson BM, Handsfield HH, Lampe A, et al: Revised recommendations for HIV testing of adults, adolescents, and pregnant women in health-care settings. MMWR 55(RR-14):1, 2006
Braunstein GO: False-positive serum human chorionic gonadotropin results: causes, characteristics, and recognition. Am J Obstet Gynecol 187:217, 2002
Braunstein GO: he long gestation of the modern home pregnancy test. Clin Chen 60(1):18, 2014
Brown A, Sinosich MJ, Saunders OM, et al: Potassium regulation and progesterone-aldosterone interrelationships in human pregnancy: a prospective study. Am J Obstet Gynecol 155:349, 1986
Butler MG, Menitove JE: Umbilical cord blood banking: an update. J Assist Reprod Genet 28:669,e2011