ArgonArgon Plasma CoagulationAfrican AmericansLaser TherapyLaser CoagulationIndians, North AmericanLight CoagulationAsian AmericansLasers, GasKryptonElectrocoagulationMexican AmericansHispanic AmericansPlasma GasesHemostasis, EndoscopicUnited StatesProctitisEuropean Continental Ancestry GroupNorth AmericaAmerican SamoaAmerican Heart AssociationTrabeculectomyGastric Antral Vascular Ectasia