Blood groups and haemoglobin variants in Nigerian (Yoruba) schoolchildren.
D000740:Anemia; D000755:Anemia, Sickle Cell; D044383:Black People; D001789:Blood Group Antigens; D006454:Hemoglobins; D006801:Humans
D001789:Blood Group Antigens; D006454:Hemoglobins
ANEMIA, SICKLE CELL; BLOOD GROUPS; HEMOGLOBIN