Related by context. Frequent words. (Click for all words.) 46 married couples 45 unmarried 45 cohabiting couples 45 couples 42 Gottman 41 sexually active 40 donor sperm 39 identical twins 39 fertility treatments 38 cohabiting 38 childless 38 contraceptive methods 37 postmenopausal 37 Married couples 37 mammography screening 37 IVF 37 screening mammography 37 heterosexual 37 BRCA2 37 unmarried couples 37 married 37 infertile couples 36 infertility treatments 36 HPV infection 36 marriages 36 genetic variants 36 HIV infection 36 infertility 36 unwed 36 surrogate mothers 36 sperm donors 36 gene variants 35 contraception 35 twins 35 HIV infected 35 pregnancies 35 heterosexual couples 35 gene variation 35 Guttmacher 35 folic acid supplements 35 oral contraceptives 35 invasive breast cancer 35 bone marrow transplants 35 Prevent Teen Pregnancy 35 CNVs 35 marital 35 sexually transmitted infection 35 divorced 34 widowers 34 circumcised 34 sperm donor 34 heterosexuals 34 married heterosexual couples 34 pre menopausal 34 marriage 34 unintended pregnancy 34 HPV strains 34 singletons 34 chromosomal 34 infertile 34 chromosomal abnormalities 34 cervical screening 34 homosexual couples 34 marrying 34 Contraception 33 premarital sex 33 genetic variations 33 monogamy 33 HPV vaccination 33 post menopausal 33 spouses 33 divorcees 33 mutated gene 33 UNAids 33 Adolescent Health 33 varicella 33 polygamous marriages 33 stress incontinence 33 fertility 33 Pap smear 33 obese 33 Pap tests 33 Psychological Association 33 newlyweds 33 Divorced 33 childbearing 32 stepparents 32 extramarital sex 32 births 32 antiviral therapy 32 stillbirth 32 contraceptive 32 HIV infections 32 marital status 32 ovaries removed 32 unwanted pregnancies 32 bisexuals 32 genetic variant 32 vaginal intercourse 32 genital herpes 32 amniocentesis