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Martin Hilber, A.; Chersich, M. F.; van de Wijgert, J. H. H. M.; Rees, H.; Temmerman, M. (2007). Vaginal practices, microbicides and HIV: what do we need to know? Sexually transmitted infections, 83(7), pp. 505-508. BMJ Publishing Group 10.1136/sti.2007.028597