作者单位: | [1]DepartmentofPathology,Col-legeofPhysiciansandSurgeonsofColumbiaUniver-sity,NewYork,NY [2]StudentHealthSer-vices,UniversityofCalifornia-SantaBarbara,andAmericanSocialHealthAssociation,Durham,NC [3]DepartmentofObstetricsandGynecology,CookCountyHospital,Chicago [4]InstituteofWomen‘sHealth,UniversityofMiami,Miami,Fla [5]DepartmentofPathology,UniversityofFloridaCollegeofMedicine,Gainesville [6]不详,UniversityofFloridaCollegeofMedicine,Gainesville |