中国科学技术信息研究所--国家工程技术数字图书馆

university of california los angeles.(11)

university of toronto (canada).(11)

university of california irvine.(7)

columbia university.(6)

the johns hopkins university.(6)

iowa state university.(5)

university of michigan.(5)

lehigh university.(4)

rutgers the state university of new jersey - new brunswick and university of medicine and dentistry of new jersey.(4)

university of california los angeles(4)

university of california san francisco.(4)

university of toronto (canada)(4)

university of washington.(4)

arizona state university.(3)

cleveland state university.(3)

northwestern university.(3)

rensselaer polytechnic institute.(3)

state university of new york at stony brook.(3)

the pennsylvania state university.(3)

the university of alabama at birmingham.(3)

university of california berkeley.(3)

university of california san diego.(3)

university of california san francisco(3)

washington university in st. louis.(3)

drexel university college of medicine.(2)

rutgers the state university of new jersey - new brunswick(2)

rutgers the state university of new jersey - new brunswick.(2)

state university of new york at buffalo.(2)

temple university.(2)

the chinese university of hong kong (hong kong).(2)