1. Mass Spectrometry Laboratory
and Centre of Theoretical and Computational Chemistry, Department
of Chemistry, University of Oslo, P.O.
Box 1033 Blindern, NO-0315 Oslo, Norway
2. Division of Atmospheric Sciences,
Department of Physics, University of Helsinki, P.O. Box 64, FI-00014 University of Helsinki, Helsinki, Finland
3. AstraZeneca R&D Mölndal, Pepparedsleden 1, SE-431 83 Mölndal, Sweden
4. Department of Biophysics,
Graduate
School of Science, Kyoto University, Kyoto
606-8502, Japan