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Background Cardiac structural and functional changes due to chronic exposure to moderately high altitudes (HA) have been poorly described. There are many larger cities with altitudes above 2000 meters over sea level (OSL) where this information is relevant. The purpose of our investigation was to identify whether chronic hemodynamic changes and tissue abnormalities were present in those native residents of moderately HA in Mexico City varying from 2250 to 2760 meters OSL.

Presence of late gadolinium enhancement in "healthy subjects": correlation with chronic exposure to moderately high altitudes