| http://www.w3.org/ns/prov#value | - The present invention relates to the surgical procedure known as laser-assisted transmyocardial revascularization TMR), and more particularly, to improved methods and apparatuses for precisely positioning a fiber-optic or other waveguide adjacent the area or areas to be lased, including at positions adjacent the posterior epicardial and endocardial surfaces of the heart and at trans-septal positio
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