%0 Journal Article %T Impact of Contextual Factors on the Effect of Interventions to Improve Health Worker Performance in Sub-Saharan Africa: Review of Randomised Clinical Trials %A Anna Bergstr£¿m %A Claire Blacklock %A Daniela C. Gon£¿alves Bradley %A David Mant %A Merlin Willcox %A Nia Roberts %A Sharon Mickan %J Archive of "PLoS ONE". %D 2016 %R 10.1371/journal.pone.0145206 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4701409/