3Pratt CA, Lemon SC, Fernandez ID,et al. Design characteristics of worksite environmental interventions for obesity prevention [J].Obeslty (Silver Spring), 2007,15(9):2 171 -2 180.
4Gladys Block, Torin Block, Patricia Wakimoto, et al. Dem- onstration of an E - mailed Worksite Nutrition Intervention Program [ J ]. Prey Chronic Dis,2004,1 (4) : A06.
5Luuk HE, Mireille NM van Poppel, Marijke CAP, et al. The effects of a controlled worksite environmental intervention on determinants of dietary behavior and self - reported fruit, vegetable and fat intake[ J]. BMC Public Heahh,2006 ,6 :253 - 263.
6Promoting health diets and lifestyles, in ICN document: Nu- trition and development a global assessment FAO and WHO [R]. Italy, 1992:95-981.