Sayle AE, Savitz DA, Thorps]M ]r, et al: Sexual activity during late pregnancy and risk of preterm delivery. Obstet Gynecol 97:283, 2001
Schau berger CW, Rooney BL, Brimer LM: Factors that inluence weight loss in the puerperium. Obstet Gynecol 9:424, 1992
Schrag S]: Maternal immunization to prevent neonatal group B streptococcal disease. Obstet Gynecol 127(2):199,s2016
Scott DE, Pritchard ]A, Satin AS, et al: Iron deficiency during pregnancy. In Hallberg L, Harwerth HG, Vannotti A (eds): Iron Deiciency: Pathogenesis, Clinical Aspects, Therapy. New York, Academic Press, 19
Screnci M, Murgi E, Valle V, et al: Sibling cord blood donor program for hematopoietic cell transplantation: the 20-year experience in the Rome Cord Blood Bank. Blood Cells Mol Dis 57:71, 2016
Sibai BM, Villar MA, Bray E: Magnesium supplementation dring pregnancy: a double-blind randomized controlled clinical trial. Ams] Obstet Gynecol 161:115,s1989
Siddique ], Lauderdale OS, VanderWeele T], et al: Trends in prenatal ultrasound use in the United States. Med Care 47:1129,2009
Siu AL, U.S. Preventive Services Task Force: Behavioral and pharmacotherapy interventions for tobacco smoking cessation in adults, including pregnant women: U.S. Preventive Services Task Force Recommendation Statement. Ann Intern Med 163(8):622,s2015
Smith CA: Efects of maternal under nutrition upon the newborn infant in Holland 0944-1945). Am] Obstet GynecoI30:229, 1947
Smith MW, Marcus PS, Wurtz LD: Orthopedic issues in pregnancy. Obstet Gynecol Surv 63: 103, 2008
Spierings EL, Sabin TO: De novo headache during pregnancy and puerperium.
Neurologist 21(1):1,s2016
Spindel ER, McEvoy CT: The role of nicotine in the efects of maternal smoking during pregnancy on lung development and childhood respiratory disease: implications for dangers of E-cigarettes. Am ] Respir Crit Care Med 193(5):486,s2016
Staruch M, Kucharcyzk A, Zawadzka K, et al: Sexual activity during pregnancy.
0):53,s2016
Stein Z, Susser M, Saenger G, et al: Nutrition and mental performance. Science 178:708, 1972
Stephens TV, Payne M, Ball Ro, et al: Protein requirements of healthy pregnancy women during early and late gestation are higher than current recommendations. J Nutr 3,s2015
Stewart RD, Nelson DB, Adhikari EH, et al: he obstetrical and neonatal impact of maternal opioid detoxiication in pregnancy. Ams] Obstet Gynecol 209:267.e1, 2013
Sugarman SO: Cases in vaccine court-legal battles over vaccines and autism.
N Engl] Med 257:1275, 200
Tan Pc, Yow CM, Omar SZ: Efect of coital activity on onset of labor in women scheduled for labor induction. Obstet Gynecol 110:820,s200