19thcent 19thcentury 20thcent adverseeffects anesthetics angiogenesisinducingagents aspirin coronaryheartdisease electricity electricshock electricstimulation electrophysiology electrotherapeutics exercisetherapy gait history historyofmedicine incubators inhalation inventions lasersurgery lasertherapy medicalinstrumentsandapparatus methods myocardialischemia myocardialrevascularization nervoussystem paraplegia paraplegics physiologicaleffect physiology physiopathology quacksandquackery regeneration rehabilitation research rm871 therapeuticuse therapy transmyocardiallaserrevascularization ultravioletradiation ultraviolettherapy wb495e3781989 wb495r362e1992 wb495t3981983 wg300m947l2000