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平台:
EBSCOhost Academic Search Complete
(Available from 1990/03/01 until 1998/12/31.)
EBSCOhost OmniFile Full Text Select
(Available from 1995/01/01 until 1998/01/04.)
EBSCOhost STM Source
(Available from 1990/03/01 until 1998/12/31.)
PubMed Central
(Available from 1994 volume: 18 until 1998 volume: 22 issue: 4.)