Are postal questionnaire surveys of reported activity valid? An exploration using general practitioner management of hypertension in older people

Author: Eccles Martin   Ford Gary A   Duggan Sandra   Steen Nick  

Publisher: Royal College of General Practitioners

ISSN: 1478-5242

Source: British Journal of General Practice, Vol.49, Iss.438, 1999-01, pp. : 35-38

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

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Abstract