title: [Orthogonal electrocardiogram of normal patients (McFee-Parungao's system) at sea level and at high altitude].
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000531:Altitude; D002648:Child; D002675:Child, Preschool; D004562:Electrocardiography / Q000379:methods; D005260:Female; D006321:Heart / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged
vernacular_title: El electrocardiograms ortogon al normal (sistema de McFee-Parungao) al nivel del mary y la altura