Thomas J. Spira, MD
To the Editor: In the article by Bach and Colleagues (1) on odynophagia from aphthous ulcers of the pharynx and esophagus in the acquired immunodeficiency syndrome (AIDS), the CD4 cell counts were incorrect. For Patients 1, 2, and 3, the counts were listed as 12 X 109/L, 383 X 109/L and 97 X 109/L, respectively. These counts should no doubt be 0.012 X 109/L, 0.383 X 109/L, and 0.097 X 109/L, or 12 X 106/L, 383 X 106/L, and 97 X 106/L, respectively. Errors of this type almost inevitably arise from the conversion of these counts from cell counts per
Thomas J. Spira. SI Units in Hematology. Ann Intern Med. 1988;109:996. doi: 10.7326/0003-4819-109-12-996_2
Download citation file:
Published: Ann Intern Med. 1988;109(12):996.
Copyright © 2017 American College of Physicians. All Rights Reserved.
Print ISSN: 0003-4819 | Online ISSN: 1539-3704
Conditions of Use