1. AVI BioPharma Inc., 4575 SW Research Way, Corvallis, OR 97333, U.S.A.
2. University of Western Australia, Perth, Western Australia, 6009, Australia
3. The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, U.S.A.
4. UMR 5235 CNRS, Université Montpellier 2, Place Eugène Bataillon, 34095 Montpellier cedex 5, France