[1] CENT UNIV VENEZUELA,SCH MED,INST EXPTL MED,PSYCHOSOMAT MED SECT,CARACAS 1080 A,VENEZUELA
[2] CENT UNIV VENEZUELA,SCH MED,INST EXPTL MED,NEUROL NEUROPHYSIOL SECT,CARACAS 1080 A,VENEZUELA
[3] CENT UNIV VENEZUELA,SCH MED,INST EXPTL MED,CLIN NEUROCHEM SECT,CARACAS 1080 A,VENEZUELA
[4] CTR CLIN PROFES CARACAS,DEPT INTERNAL MED,CARACAS,VENEZUELA
[5] HANS SELYE INST PSYCHOSOMAT MED,CARACAS,VENEZUELA