Laser center companies develop US market.
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D003132:Commerce; D003315:Cornea / Q000601:surgery*; D003362:Cost-Benefit Analysis; D006801:Humans; D054018:Lasers, Excimer; D018903:Photorefractive Keratectomy / Q000191:economics / Q000639:trends*; D054140:Refractive Surgical Procedures; D014481:United States