Related by context. Frequent words. (Click for all words.) 50 Passive smoking 50 undergoing IVF 49 Blood transfusions 49 Artificial insemination 48 ovarian stimulation 48 perinatal mortality 48 Gestational diabetes 47 Stomach cancer 47 IVF 47 Male circumcision 47 embryo transfers 46 Oral contraceptives 46 donor insemination 46 Premature birth 46 vitro fertilization IVF 46 unexplained infertility 46 IVF treatment 46 Testicular cancer 45 Sexual dysfunction 45 Peanut allergy 45 de ath 45 Therapeutic cloning 45 follicle stimulating hormone 45 infertile couples 44 fertility treatments 44 Cigarette smoking 44 neural tube defect 44 fertility 44 Pre eclampsia 44 infertility treatments 44 assisted reproduction 44 progestogen 44 Sexually active 44 Multiple births 44 Preterm birth 44 Seasonal influenza 44 Premature births 43 oral contraceptive pill 43 birthweight 43 childbirths 43 Caesarean delivery 43 Gastric bypass 43 rotavirus infection 43 Hormone therapy 43 infertility 43 Birth defects 43 bacterial vaginosis 43 IVF cycles 43 preimplantation genetic diagnosis 43 difficulty conceiving 43 oral contraception 43 cardio vascular disease 43 congenital malformations 42 disease CHD 42 polycystic ovary syndrome 42 gonadotropin 42 vitro fertilization 42 Physical inactivity 42 hormonal contraceptive 42 Cataract surgery 42 transplanted kidneys 42 spontaneous abortions 42 Mental disorders 42 IVF treatments 42 assisted reproductive 42 Gastric bypass surgery 42 Preeclampsia 42 intrauterine insemination 42 polycystic ovarian syndrome 42 Vitro Fertilization 42 Oestrogen 42 fertility clinics 42 childbirth complications 41 journal Fertility 41 Kidney transplant 41 embryo implantation 41 Breast implants 41 caesarean delivery 41 Iron deficiency 41 pancreases 41 preterm delivery 41 CMV infection 41 premature menopause 41 HIV infected 41 preterm births 41 estimated glomerular filtration 41 colorectal cancer CRC 41 Diabetes mellitus 41 stillbirths 41 male infertility 41 sperm motility 41 QALY 41 cesareans 41 Anorexia nervosa 41 births 41 Medication errors 40 childbirth 40 cryptorchidism 40 cesarean delivery 40 antithrombin 40 cesarean sections