Letter to the editors.
Ellingsrud
Rector Geir
RG
University of Oslo, Box 1072, Blindern, 0316, Oslo, Norway. geir.ellingsrud@admin.uio.no.
Hove
Rector Knut
RK
Norwegian University of Life Sciences, Box 5003, 1431, As, Norway.
D032984:Ethics, Research; D038821:Mycorrhizae; D009664:Norway; D010944:Plants / Q000382:microbiology*