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Ralph M. Waters, M.D.
JAMA. 1920;74(16):1116. doi:10.1001/jama.1920.02620160056023.
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To the Editor:  —In The Journal, April 3, 1920, p. 941, Dr. Clendening states his suspicion that motor-driven ether apparatus may be a frequent cause of lung abscess after tonsillectomy. He goes farther and states that the use of these machines should be discontinued until their innocence is proved.My work is that of an expert anesthetist, and in the course of a month I probably work with a dozen different operators for tonsillectomy, thus becoming familiar with many and varied types of technic. From my own experience it would seem to me altogether too radical to condemn the use of an apparatus found so valuable by so many men on the sole argument of "post hoc ergo propter hoc."Dr. Clendening does not mention whether the position used during operation in his cases was the dorsal one or not, nor does he say whether those patients having lung abscess


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