9Eypasch E, Willians JI, Wood- Dauphinee S, et al. Gastrointes- tinal Quality of life index: development validation and applica - tion of a new instrument[J]. Br J Surg, 1993, 82(2):216.
10D Max Parkin, Freddie Bray, J Ferlay, et al. Global Cancer Statistics, 2002[J]. CA Cancer J Clin, 2005,55: 74-108.
4Phillips S J,Dudik M,Elith J,et al.Sample selection bias and Presence-only distribution models:implications for background and pseudo-absence data[J].Ecol Appl,2009,19(1):181-197.
5Gross C P,Mc Avay G J,Guo Z,et al.The impact of chronic illnesses on the use and effectiveness of adjuvant chemotherapy for colon cancer[J].Cancer,2007,109(12):2410-2419.