title: Border Crossing: Olympic challenges.
authors.affiliation: trichards@bmj.com
authors.forename: Tessa
authors.initials: T
authors.lastname: Richards
mesh_terms: D000397:Air Pollution / Q000009:adverse effects / Q000191:economics / Q000517:prevention & control*; D002681:China; D003365:Costs and Cost Analysis; D006291:Health Policy; D006304:Health Status; D011639:Public Opinion; D013177:Sports; D014876:Water Pollution / Q000009:adverse effects / Q000191:economics / Q000517:prevention & control