Authors: Kathleen M Powis; Douglas Kitch; Anthony Ogwu; Michael D Hughes; Shahin Lockman; Jean Leidner; Erik van Widenfelt; Claire Moffat; Sikhulile Moyo; Joseph Makhema; Max Essex; Roger L Shapiro Journal: J Infect Dis Date: 2011-08-15 Impact factor: 5.226