Significant anaemia and seasonal variations of haemoglobin concentrations in pregnant women.
D000740:Anemia; D005260:Female; D006454:Hemoglobins; D006801:Humans; D010507:Periodicity; D011247:Pregnancy / Q000097:blood; D012621:Seasons
D006454:Hemoglobins
ANEMIA/in pregnancy; HEMOGLOBIN; PERIODICITY; PREGNANCY/blood in