Letter: Smoking and leukocyte counts in pregnancy.
D000293:Adolescent; D000328:Adult; D001491:Basophils; D004804:Eosinophils; D005260:Female; D006801:Humans; D007958:Leukocyte Count; D008214:Lymphocytes; D009000:Monocytes; D011247:Pregnancy; D012907:Smoking