Some problems in the history of haemoglobinometry (1878-1931).
D003124:Colorimetry; D006452:Hemoglobinometry / Q000266:history*; D006454:Hemoglobins / Q000032:analysis; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D012016:Reference Values; D006113:United Kingdom; D014481:United States
D006454:Hemoglobins