| Literature DB >> 12631895 |
M.L.A. Heijnen, J.W. Dorigo-Zetsma, A.I.M. Bartelds, B Wilbrink, M.J.W Sprenger.
Abstract
The Netherlands Institute of Primary Health Care (NIVEL) has coordinated the activities of a sentinel surveillance network of 43 general practices since 1970. These practices care for 1% of the Dutch population, a sample representative of the national popYear: 1999 PMID: 12631895 DOI: 10.2807/esm.04.07.00054-en
Source DB: PubMed Journal: Euro Surveill ISSN: 1025-496X