In the letter by Drs. Ratner and Athanasian ( 1 ) in the December issue, the hemoglobin level is given incorrectly. The correct value is 9.2 g/dL.
Correction: Hemoglobin Level in Letter on Water Sports and Sickle Cell Anemia. Ann Intern Med. ;106:483. doi: 10.7326/0003-4819-106-3-483_4
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Published: Ann Intern Med. 1987;106(3):483.
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