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- Eisenberg D. M., Davis R. B., Ettner S. L., Appel S., Wilkey S., Van Rompay M., Kessler R. C. Trends in alternative medicine use in the United States, 1990-1997: results of a follow-up national survey. JAMA. 1998 Nov 11;280(18):1569–1575. doi: 10.1001/jama.280.18.1569. [DOI] [PubMed] [Google Scholar]
- Grimm W., Müller H. H. A randomized controlled trial of the effect of fluid extract of Echinacea purpurea on the incidence and severity of colds and respiratory infections. Am J Med. 1999 Feb;106(2):138–143. doi: 10.1016/s0002-9343(98)00406-9. [DOI] [PubMed] [Google Scholar]
- Melchart D., Walther E., Linde K., Brandmaier R., Lersch C. Echinacea root extracts for the prevention of upper respiratory tract infections: a double-blind, placebo-controlled randomized trial. Arch Fam Med. 1998 Nov-Dec;7(6):541–545. doi: 10.1001/archfami.7.6.541. [DOI] [PubMed] [Google Scholar]
- Miller L. G. Herbal medicinals: selected clinical considerations focusing on known or potential drug-herb interactions. Arch Intern Med. 1998 Nov 9;158(20):2200–2211. doi: 10.1001/archinte.158.20.2200. [DOI] [PubMed] [Google Scholar]
- Mullins R. J. Echinacea-associated anaphylaxis. Med J Aust. 1998 Feb 16;168(4):170–171. doi: 10.5694/j.1326-5377.1998.tb126773.x. [DOI] [PubMed] [Google Scholar]