Preventing and Treating Pain and Anxiety during Needle-Based Procedures in Children with Cancer in Low- and Middle-Income Countries.

McNeil MJ, Garcia Quintero X, Gonzalez M, Zheng Y, Ugaz Olivares C, Morales R, Boldrini E, Rebollo de Campos D, Ferreira D, Coopasamy K, Caneba J, Padernilla ML, Friedrichsdorf S, Baker JN, Friedrich P