Design: Cluster randomized trial; data collected in 2010-2011; analyzed in 2011-2012 Setting/Participants: Individuals (seeds) recruited in multiple settings (online, via newspaper ads and face-to-face) who were asked to recruit up to three friends, who in turn recruited additional friends, extending three waves from the seed. Seeds and waves of friends were considered networks and exposed to either intervention or control condition. Intervention: Exposure to Just/Us, a Facebook page...

Valerae Lewis, M.D., Associate Professor in The University of Texas MD Anderson Cancer Center Department of Orthopaedic Oncology, discusses the many surgery options for bone cancer patients. Limb salvage surgery replaces the cancerous bone with either a bone graft from another person (allowgraft), a metal implant or a combination of the two (allo-prosthetic). After amputation of the lower leg, rotationplasty moves the ankle joint to where the knee once was to function as the knee joint. MD...

The assessment of iron status where infections are common is complicated by the effects of inflammation on iron indicators and in this study we compared approaches that adjust for this influence. Blood was collected in 680 children (aged 6–35 mo) and indicators of iron status [(hemoglobin (Hb), zinc protoporphyrin (ZP), ferritin, transferrin receptor (TfR), and TfR/ferritin index)] and subclinical inflammation [(the acute phase proteins (APP) C-reactive protein (CRP), and a-1-acid...

Background Both food insufficiency and HIV infection are major public health problems in sub-Saharan Africa, yet the impact of food insufficiency on HIV risk behavior has not been systematically investigated. We tested the hypothesis that food insufficiency is associated with HIV transmission behavior. Methods and Findings We studied the association between food insufficiency (not having enough food to eat over the previous 12 months) and inconsistent...