Erratum to: Mapping the use of research to support strategies tackling maternal and child health inequities: evidence from six countries in Africa and Latin America. Issue 1 (December 2016) - Vargas-Riaño, Emily; Becerril-Montekio, Victor; Gonzalez-Block, Miguel; Akweongo, Patricia; Hazel, Cynthia; Cuembelo, Maria; Limbani, Felix; Bernardo, Wanderley; Muñoz, Fernando