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Table 1 Search terms used in systematic review

From: Intrauterine environments and breast cancer risk: meta-analysis and 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