- Medical residents with ages between 23 and 45 years old, attending the first year of medical specialty in Portugal in the following specialties*: General Surgery, Neurosurgery; Orthopedics; Intern Medicine, Gastroenterology; Cardiology; Rheumatology; Endocrinology; Oncology; Intensive Medicine; Pediatric; Radiology; Clinical Pathology; Neurology and Psychiatry.