Impact of Extended Combination Antiretroviral Therapy on the Decline of HIV Prevalence in Pregnant Women in Malawi oleh Giuseppe Liotta MD, Frank Chimbwandira MD, Kristien Wouters MD, Karin Nielsen-Saines MD, MPH, Haswell Jere MD, Sandro Mancinelli MD, Susanna Ceffa PhD, Fulvio Erba MD, Leonardo Palombi MD, Maria Cristina Marazzi MD