A randomized controlled trial of the effect of fluid extract of Echinacea purpurea on the incidence and severity of colds and respiratory infections
Year: 1999
Type: article
Study designs: Randomized Controlled Trial, Clinical Trial
Source: The American Journal of Medicine
Authors: Wolfram Grimm, Hans-Helge Müller
Institution: Philipps University of Marburg
Language: English
Subfield: Complementary and alternative medicine
Field: Medicine
Domain: Health Sciences
Open Access status: closed
OpenAlex ID: W1985607069