Quantity of diagnostic blood sampling and its clinical relevance.
D001800:Blood Specimen Collection; D001810:Blood Volume; D004912:Erythrocytes; D005260:Female; D006400:Hematocrit; D006452:Hemoglobinometry; D006454:Hemoglobins; D006801:Humans; D008297:Male; D008722:Methods; D008875:Middle Aged
D006454:Hemoglobins