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                                    Cost-effectiveness of Using Social Networks to Identify Undiagnosed HIV Infection Among Minority Populations  
                                
                                
                                Ram K. Shrestha PhD,Stephanie L. Sansom PhD, MPP, MPH,Lisa  Kimbrough MS,Angela B. Hutchinson PhD, MPH,Daniel  Daltry MSW,Waleska  Maldonado MHSA,Georgia M. Simpson-May MMHS,Sean  Illemszky BS