Related by context. Frequent words. (Click for all words.) 54 intramuscular injections 53 folic acid supplementation 52 valacyclovir 52 progesterone 52 oral contraception 51 magnesium sulfate 51 nifedipine 50 pregnancy 50 preterm delivery 50 progestogen 50 vitamin D supplement 50 menses 50 menstruate 50 vaginally 50 spontaneous abortions 49 risedronate 49 Nevirapine 49 valproate 49 Depo Provera 49 hormones estrogen 49 intramuscular injection 49 milligram doses 48 intramuscular 48 pregnancies 48 preterm birth 48 estrogen therapy 48 zidovudine 48 hormone therapy 48 azathioprine 47 hormonal contraceptives 47 levothyroxine 47 estriol 47 preterm births 47 intravenous injections 47 DMPA 47 letrozole 47 pregnant 47 tamoxifen therapy 47 ectopic pregnancies 47 ovulate 47 CMV infection 47 cesarean delivery 47 NuvaRing 47 hormone injections 47 premenopausal 46 REYATAZ 46 prenatal vitamins 46 episiotomy 46 misoprostol 46 isotretinoin 46 #mg dose [003] 46 valproic acid 46 vitamin D supplementation 46 progestins 46 Ortho Evra 46 calcium supplementation 46 cesareans 46 oral bisphosphonates 46 Cesarean 46 supplementation 46 neural tube defect 46 virologic failure 46 heavy menstrual bleeding 46 bacterial vaginosis 45 lamotrigine 45 mg doses 45 prenatally 45 amenorrhea 45 levonorgestrel 45 Progesterone 45 premature menopause 45 varicella vaccine 45 estradiol 45 ziprasidone 45 menstrual cycle 45 oral contraceptives 45 topiramate 45 HAART 45 epoetin alfa 45 pills 45 fetal abnormalities 45 preterm 45 weeks gestation 45 menopausal hormone therapy 45 nevirapine 45 subcutaneous injections 45 BARACLUDE 45 montelukast 45 hormonal contraception 45 1mg 44 Pregnancies 44 unprotected intercourse 44 low birthweight babies 44 ketoconazole 44 Mirena 44 thrombolytic therapy 44 pill 44 intravenous infusions 44 gestational age 44 alendronate 44 estrogen pills