title: Preface.
authors.affiliation: Department of Surgery, UC Davis Health System, UC Davis Children's Hospital, 2221 Stockton Blvd, Suite 3112, Sacramento, CA 95817.
authors.forename: Diana L
authors.initials: DL
authors.lastname: Farmer
authors.affiliation: Rady Children's Hospital, University of California, San Diego.
authors.forename: Stephen W
authors.initials: SW
authors.lastname: Bickler
mesh_terms: D002648:Child; D000067576:Child Health; D003906:Developing Countries; D014943:Global Health; D006297:Health Services Accessibility; D054625:Healthcare Disparities; D006801:Humans; D012959:Socioeconomic Factors; D013043:Specialties, Surgical; D013514:Surgical Procedures, Operative