By Hobma Sjoerd   Ram Paul   Muijtjens Arno   van der Vleuten Cees   Grol Richard   in British Journal of General Practice

ISSN:1478-5242|56|529|580-586

Royal College of General Practitioners‎(2006)‎

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By Hobma Sjoerd O   Ram Paul M   van Merode Frits   van der Vleuten Cees PM   Grol Richard PTM   in Quality in Primary Care

ISSN:1479-1064|12|4|271-278

Radcliffe Press‎(2004)‎

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