TY - JOUR AU - Karsch-Völk, M; Barrett, B; Kiefer, D TI - Echinacea for preventing and treating the common cold JO - Cochrane Database Syst Rev VL - 2 PY - 2014 DO - 10.1002/14651858.CD000530.pub3 L3 - PubMed-ID: 24554461 SP - CD000530. N1 - et al. ER -