Gastrointestinal Endoscopy · 2004 · 31 citations · 31 references
MedicineInternal MedicineGastroenterologyPatient SafetyGastrointestinal Bleeding ManagementGastrointestinal EndoscopyPeptic Ulcer DiseasePeptic Ulcer Disease CareTherapeutic EndoscopyUlcer ManagementEndoscopic Injection TherapyGastric Ulcer Management
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Statistical Methods for Rates and Proportions.
B. S. Everitt, J. L. Fleiss · Biometrics · 1981 · 9.1K citations
ASA Physical Status Classifications
William D. Owens, James A. Felts, Edward L. Spitznagel · Anesthesiology · 1978 · 2K citations · Full text