Subject
empathy; Health aspects; family medicine; CARE MEASURE; Common Cold - therapy; health outcomes; PLACEBO; CARE; Cold (Disease); Common cold; Common Cold - psychology; CONTEXT; CONTROLLED-TRIAL; ECHINACEA; ENVIRONMENTAL & OCCUPATIONAL HEALTH; EXPECTATIONS; GENERAL-PRACTICE CONSULTATIONS; Interdisciplinary; Interleukin-8 - analysis; Medical informatics; Neutrophils - immunology; Patient-practitioner interaction; PUBLIC; RESPIRATORY SYMPTOM SURVEY; SOCIAL SCIENCES; Therapeutic encounter; VALIDATION