1. GGD Municipal Public Health Service Amsterdam, Dr Valckenier Outreach Primary Care Practice for the Homeless, 1000 CE Amsterdam, The Netherlands, ,
2. GGD Municipal Public Health Service Amsterdam, Dr Valckenier Outreach Primary Care Practice for the Homeless, 1000 CE Amsterdam, The Netherlands
3. GGD Municipal Public Health Service Amsterdam, Dr Valckenier Outreach Primary Care Practice for the Homeless, 1000 CE Amsterdam, The Netherlands, Academic Medical Centre, University of Amsterdam, Department of Social Medicine, Amsterdam, The Netherlands