Hannelore MGötz, Ingrid V Fvan den Broek, Christian J P AHoebe, Elfi E H GBrouwers, Lydia LPars, Johan S AFennema, Rik HKoekenbier, Sandervan Ravesteijn, Eline L MOp de Coul, Janvan Bergen
Sexually Transmitted Infections Feb 2013, 89 (1) 63-69; DOI: 10.1136/sextrans-2011-050455