Agyemang Charles, Seeleman Conny, Suurmond Jeanine, Stronks Karien
Department of Social Medicine Academic Medical Centre, University of Amsterdam, Postbus 22660, 1100 DD Amsterdam, The Netherlands.
Eur J Public Health. 2007 Jun;17(3):240-1. doi: 10.1093/eurpub/ckm040.