title: Postmenstrual gestational age should be used with care in studies of early human hematopoietic development.
authors.forename: Andrejs
authors.initials: A
authors.lastname: Ivanovs
authors.forename: Stanislav
authors.initials: S
authors.lastname: Rybtsov
authors.forename: Richard A
authors.initials: RA
authors.lastname: Anderson
authors.forename: Marc L
authors.initials: ML
authors.lastname: Turner
authors.forename: Alexander
authors.initials: A
authors.lastname: Medvinsky
mesh_terms: D004622:Embryo, Mammalian / Q000196:embryology*; D005260:Female; D005865:Gestational Age; D006801:Humans; D008597:Menstrual Cycle; D011247:Pregnancy; D013997:Time Factors