TY  - RPRT
TI  - Echinacea for the common cold.
AU  - Paul J Millea
PY  - 2003
DO  - 10.7326/0003-4819-139-7-200310070-00020
UR  - https://pubmed.ncbi.nlm.nih.gov/14530239/
ID  - 14530239
ER  -