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Methodological Aspects of Identifying Recruiting Criteria for Drug Trials and Risk Factors for the Disease
Kellhammer, Ursula, Pfaffenrath, VolkerVolume:
5
Language:
english
Journal:
Cephalalgia
DOI:
10.1177/03331024850050s3220
Date:
July, 1985
File:
PDF, 177 KB
english, 1985