RT Book, Section A1 Cunningham, F. Gary A1 Leveno, Kenneth J. A1 Bloom, Steven L. A1 Dashe, Jodi S. A1 Hoffman, Barbara L. A1 Casey, Brian M. A1 Spong, Catherine Y. SR Print(0) ID 1160772770 T1 Preconceptional Care T2 Williams Obstetrics, 25e YR 2018 FD 2018 PB McGraw-Hill Education PP New York, NY SN 9781259644320 LK obgyn.mhmedical.com/content.aspx?aid=1160772770 RD 2024/03/28 AB Pregnancy may be associated with certain diseases that existed before the inception of pregnancy. As a rule, all diseases which subject the organism to a considerable strain are much more serious when occurring in a pregnant woman.—J. Whitridge Williams (1903)