Table 1

Search terms used in systematic review

Subject
Search term

Breast neoplasm
Breast neoplasms, subsequent breast neoplasm, breast neoplasm and daughter
Birth weight
Cirth weight, birthweight, birth size
Birth order
Birth order, birth rank
Maternal age
Maternal age, mother's age, parental age
Gestational age
Gestational age, preterm, prematurity, abruption placenta, pre-eclampsia, eclampsia
Twinship
Twin, twining, multiple births, multiple pregnancy, monozygote twin, dizygote twin,
Parental smoking
Maternal smoking, mother's smoking, paternal smoking, father's smoking, parental smoking
Others
Prenatal factors, perinatal factors, intrauterine environment, intrauterine factor, In-utero exposure

Park et al. Breast Cancer Research 2008 10:R8   doi:10.1186/bcr1850