Arndt Büssing*, Dirk Cysarz, Friedrich Edelhäuser, Gudrun Bornhöft, Peter F Matthiessen and Thomas Ostermann
* Corresponding author: Arndt Büssing arndt.buessing@uni-wh.de
BMC Complementary and Alternative Medicine 2008, 8:61 doi:10.1186/1472-6882-8-61