1. Centre for Theoretical and Computational Chemistry and Department of Chemistry, University of Tromsø, N‐9037 Tromsø (Norway), Fax: (+47) 77644765
2. Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA 15213 and Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, Pittsburgh, PA 15213 (USA)
3. Department of Physics, Wake Forest University, Winston‐Salem, NC 27109 (USA)