Surveys (2) Encuestas (2) nécessité (2) Labor (1) Inflammatory bowel diseases (1) Women physicians (1) Teaching (1) Teachers (1) Students (1) Strategy (1) Stocks (1) Science (1) School children (1) Research (1) Problem solving (1) Pictures (1) Pediatrics (1) Pediatric gastroenterology (1) Occupations (1) Medicine (1) Learning, Psychology of (1) Interviews (1) Gastroenterology (1) Education--Research (1) Education (1) Computer software (1) Communication and traffic (1) Communication (1) Bibliography (1) Pedagogía--Investigación (1)