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The HUNT study: participation is associated with survival and depends on socioeconomic status, diseases and symptoms
Arnulf Langhammer, Steinar Krokstad, Pål Romundstad…Volume:
12
Language:
english
DOI:
10.1186/1471-2288-12-143
Date:
December, 2012
File:
PDF, 644 KB
english, 2012