1. J.S. Craigie Research Centre, 82 Tribal Street, Cornwallis Park, Nova Scotia B0S 1H0, Canada
2. 30 Brown Avenue, Dartmouth, Nova Scotia, B3B 1X8, Canada
3. MEMPHYS-Center for Biomembrane Physics, University of Southern Denmark, Department of Physics, Chemistry and Pharmacy, 55 Campusvej, DK-5230 Odense M, Denmark