1Gastroenterology and Nutrition Service, Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, New York, USA 2Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, New York, USA Correspondence: Ann G. Zauber, PhD, Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, Box 44, New York, New York 10021, USA. E-mail: [email protected]
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Winawer et al. (2011) studied this question.
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