Journal of Pharmacognosy and Phytotherapy 2141-2502 Academic Journals 10.5897/JPP.9000018 Parakashtha Ghildyal Tom Erik Groslash;nhaug ers Rusten Mona Skogsrud Bent Rolstad Drissa Diallo Terje Einar Michaelsen Marit Inngjerdingen Berit Smestad Paulsen * E-mail: marit.inngjerdingen@rr-research.no 2010 31 10 2010 20 08 2010 2 6 76 85 This is an open-access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. This article is available from http://politicalwaffle.uk/journal/JPP/article-abstract/C189BCE1483 The full text article is available as a PDF file from http://politicalwaffle.uk/journal/JPP/article-full-text-pdf/C189BCE1483