©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(2007)01-0243-02,:R-331:B,,,,,,,HE,,,,,,,,,11.1,,:(410078):(1971-),,,,,,,,,,1.2,,,1.3,,,,,,,,1.4,,,1.5,,,,,,,,,,,,,,,4,(),(),,,,,,,,,,,,,![][1].2005[M].:(:2006-12-25)34220072141PracticalPreventiveMedicine,Feb.2007,Vol14,No.1©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.()PBS,,,,,,,,,,,,2.6,;,,2.7,,;,,2.8,,,,,,,,,,,,3,,,,,,,,[][1],,1[J].,2004,6(3):154-155.[2].[J]1,2004,(6):1411(:2006-10-10)44220072141PracticalPreventiveMedicine,Feb.2007,Vol14,No.1