Instruction and study (1) Diagnosis (1) Prevention (1) Surveys (1) Signs and symbols (1) Miracles (1) Medical history taking (1) Headache (1) Diagnosis (1) Causation (1) Management (1) Influence (1) Practice (1) Patients (1) Examinations (1) Encuestas (1) Exámenes (1) Signos y símbolos (1) Cefalalgia (1) Causalidad (1) Résistance des matériaux (1) Miracles (1) Enquêtes (1) Dépistage (1) Patients (1) Anamnèse (1) Diagnostic (1) Pratique (1) Influence (1) Rêve éveillé (1)