PHILIPPINE MEDICAL ASSOCIATION, PHILIPPINE NEUROLOGICAL ASSOCIATION, PHILIPPINE COLLEGE OF ADDICTION MEDICINE, WORLD STROKE ORGANIZATION, INTERNATIONAL HEADACHE SOCIETY, AMERICAN ACADEMY OF NEUROLOGY, EUROPEAN ACADEMY OF NEUROLOGY, INTERNATIONAL MOVEMENT
National Reference Laboratory for Environmental and Occupational Health, Toxicology, Micronutrient Assay and Chemical Incidents-East Avenue Medical Center