Journal Article
                        
                        Wall, Kristin M, Bellington  Vwalika, Lisa  Haddad, Naw Htee  Khu, Cheswa  Vwalika, William  Kilembe, Elwyn  Chomba, Rob  Stephenson, David  Kleinbaum, and Azhar  Nizam.  
"Impact of long-term contraceptive promotion on incident pregnancy: a randomized controlled trial among HIV positive couples in Lusaka, Zambia." Journal of Acquired Immune Deficiency Syndromes (1999) 63, no. 1 (2013): 86-95.