Commentary on: Effect of training traditional birth attendants on neonatal mortality (Lufwanyama Neonatal Survival Project): randomised controlled studyGillCJ1Save the Children, Amherst, Massachusetts, USA2Save the Children, Washington, District of Columbia, USAPhiri-MazalaG1Save the Children, Amherst, Massachusetts, USA2Save the Children, Washington, District of Columbia, USAGuerinaNG1Save the Children, Amherst, Massachusetts, USA2Save the Children, Washington, District of Columbia, USAet al.BMJ2011342d346