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  1. USMLE Step 1 Forum
    A 60 yo man has an abscess for which his physician prescribes a 7 day course clindamycin. before completion of the course, the patient returns with cramps, diarrhea, and a fever (39 degrees Celsius). a sigmoidoscopy finds yellowish-white patchy areas on the wall of the colon. which of the...
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