four hours after onset of symptoms. The mortality rate in this group was 3 per cent, and, if the 2 patients who died following cholecystectomy through an incision originally intended for an appendectomy are excluded, the mortality rate was zero. Of the patients coming to the hospital one to three days after onset the mortality rate was 6 per cent, and of those coming more than three days, who formed more than half the series, the From the
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