title: Presidential address: changing boundaries.
authors.affiliation: International Medical Group, Washington, DC, USA.
authors.forename: J L
authors.initials: JL
authors.lastname: Cox
mesh_terms: D013504:Cardiovascular Surgical Procedures / Q000706:statistics & numerical data / Q000639:trends*; D005544:Forecasting; D014943:Global Health; D006801:Humans; D007391:International Cooperation; D020380:Needs Assessment; D009936:Organizational Innovation; D009937:Organizational Objectives; D011057:Politics; D011203:Poverty; D012922:Social Change; D012955:Societies, Medical / Q000458:organization & administration*; D013903:Thoracic Surgery / Q000193:education / Q000458:organization & administration*; D014481:United States