title: Crossing borders.
authors: Bruce J
authors: BJ
authors: Hillman
mesh_terms: D003226:Congresses as Topic; D003258:Consumer Behavior / Q000191:economics*; D038622:Internationality; D017060:Patient Satisfaction / Q000191:economics*; D011871:Radiology / Q000191:economics*; D014195:Travel / Q000191:economics* / Q000523:psychology*; D014481:United States