title: Barriers in the United States to obtaining certification in critical care medicine.
authors.forename: Robert
authors.initials: R
authors.lastname: Green
mesh_terms: D002170:Canada; D002568:Certification / Q000592:standards*; D003422:Critical Care; D004501:Education, Medical; D004635:Emergency Medicine / Q000193:education* / Q000592:standards; D006801:Humans; D008511:Medicine / Q000592:standards; D013038:Specialization; D014481:United States