Completing a postal health questionnaire did not affect...

Completing a postal health questionnaire did not affect anxiety or related measures: randomized controlled trial

David P. French, Helen Eborall, Simon Griffin, Ann Louise Kinmonth, A. Toby Prevost, Stephen Sutton

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Volume:

Year:

2009

Language:

english

DOI:

10.1016/j.jclinepi.2008.02.015

File:

PDF, 145 KB

english, 2009

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