By Bakx Carel   Schwarte Judith   van den Hoogen Henk   Bor Hans   van Weel Chris   in British Journal of General Practice

ISSN:1478-5242|55|520|860-863

Royal College of General Practitioners‎(2005)‎

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By Engels Yvonne   van den Hombergh Pieter   Mokkink Henk   van den Hoogen Henk   van den Bosch Wil   Grol Richard   in British Journal of General Practice

ISSN:1478-5242|56|531|781-787

Royal College of General Practitioners‎(2006)‎

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By Gorgels Wim   Oude Voshaar Richard   Mol Audrey   Van De Lisdonk Eloy   Mulder Jan   Van Den Hoogen Henk   Van Balkom Anton   Breteler Marinus   Zitman Frans   in Scandinavian Journal of Primary Health Care

ISSN:0281-3432|26|2|74-79

Informa Healthcare‎(2008)‎

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