John D. Groopman
Lewis, Richard J. Sr.
American Herbal Products Association.
Randall C. Baselt
Peter Watts
Donald J. Ecobichon
Robert J. Kavlock
Unknown Author
Flaminio Cattabeni
International Programme on Chemical Safety.
International Program on Chemical Safety
World Health Organization (WHO)
Renato Baudo
Victor R. Preedy
S. Ramamoorthy
Ulrich Förstner