[1] PONTIFICIA UNIV CATOLICA CHILE, HOSP CLIN, DEPT ANESTESIOL, SERV CIRUGIA ANESTESIA & PABELLONES, SANTIAGO, CHILE
[2] PONTIFICIA UNIV CATOLICA CHILE, HOSP CLIN, DEPT ENFERMEDADES CARDIOVASC, SANTIAGO, CHILE
[3] PONTIFICIA UNIV CATOLICA CHILE, ESCUELA MED, SANTIAGO, CHILE