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Public Health, Biostatistics, Epidemiologic Methods +13

A Prospective Analysis of 1518 Laparoscopic Cholecystectomies

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Medicine, Surgery, Gastroenterology +11

Modelling Survival Data in Medical Research.

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Testing for Qualitative Interactions between Treatment Effects and Patient Subsets

Mitchell H. Gail, Richard Simon · Biometrics · 1985 · 655 citations

Medicine, Biostatistics, Causal Inference +15

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J. Mark Farrant, Karen M. Hayllar, Mark Wilkinson et al. · Gastroenterology · 1991 · 477 citations · Full text

Medicine, Internal Medicine, Pathology +16