- Correspondence to Genevieve A F S van Liere, Department of Sexual Health, Infectious Diseases and Environmental Health, Public Health Service South Limburg, Heerlen 6400 AA, The Netherlands;
- Received August 27, 2018
- Revised December 24, 2018
- Accepted February 11, 2019
- First published March 11, 2019.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.