Authors: Parker, V Wong, AHC Boon, HS Seeman, MV

Citation: V. Parker et al., Adverse reactions to St John's Wort, CAN J PSY, 46(1), 2001, pp. 77-79

Authors: Smith, M Boon, HS

Citation: M. Smith et Hs. Boon, Counseling cancer patients about herbal medicine, PAT EDUC C, 38(2), 1999, pp. 109-120