| Affiliation: | 1.Leiden University Medical Center, Leiden, the Netherlands; the;2.Rijnland Hospital, Leiderdorp, the Netherlands; the;3.Bronovo Hospital, The Hague, the Netherlands; the;4.Primary Health Care Center, Wassenaar, the Netherlands;;5.Public Health and Primary Care, Leiden, the Netherlands; the;6.Medical Center Haaglanden, The Hague, the Netherlands; the;7.Groene Hart Hospital, Gouda, the Netherlands;;8.Diaconessenhuis, Leiden, the Netherlands; and the;9.Haga Hospital, The Hague, the Netherlands |
