The validity of questionnaire-based diagnoses: the third Nord-Trøndelag Health Study 2006-2008.
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| Description | scientific article |
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author: Knut Hagen Grethe Helde Marit Stjern Geir Bråthen Kristian Bernhard Nilsen Lars Jacob Stovner John-Anker Zwart |
| Publication date | November 28, 2009 |
| Language | English |
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