By Peremans Lieve   Rethans Jan Joost   Verhoeven Veronique   Coenen Samuel   Debaene Luc   Meulemans Herman   Denekens Joke   Van Royen Paul   in The European Journal of Contraception and Reproductive Health Care

ISSN:1473-0782|15|4|280-289

Informa Healthcare‎(2010)‎

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By Derkx Hay P   Rethans Jan-Joost E   Knottnerus J André   Ram Paul M   in British Journal of General Practice

ISSN:1478-5242|57|538|383-387

Royal College of General Practitioners‎(2007)‎

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