Tsitsi Grace Monera, University of Zimbabwe School of Pharmacy
22 November 2010
What are the author's experiences in terms of getting ethical approval for this trial? Where these patients Echinaecea naive at baseline? What about inductive effects that may take longer to take effect?
Ethical review
22 November 2010
What are the author's experiences in terms of getting ethical approval for this trial? Where these patients Echinaecea naive at baseline? What about inductive effects that may take longer to take effect?
Competing interests
No competing interests