中国科学技术信息研究所--国家工程技术数字图书馆

dartmouth college.(3)

university of southern california.(3)

wayne state university.(3)

dalhousie university (canada).(2)

emory university(2)

indiana university.(2)

the university of chicago.(2)

university of michigan.(2)

university of virginia.(2)

washington university in st. louis(2)

duke university.(1)

georgetown university.(1)

harvard university.(1)

mount sinai school of medicine of new york university.(1)

new mexico state university.(1)

new york university(1)

new york university.(1)

northwestern university(1)

state university of new york at buffalo.(1)

the medical college of wisconsin(1)

the medical college of wisconsin.(1)

the university of north carolina at chapel hill.(1)

the university of tennessee health science center.(1)

the university of tennessee.(1)

the university of toledo.(1)

the university of western ontario (canada).(1)

the university of wisconsin - madison.(1)

tulane university(1)

university of california los angeles(1)

university of california los angeles.(1)