1. Molecular and Radiation Biophysics Division; B. P. Konstantinov Petersburg Nuclear Physics Institute; National Research Centre ‘Kurchatov Institute’; Gatchina Russia
2. Laboratory of Natural Polymers; Institute of Macromolecular Compounds; Russian Academy of Sciences; St Petersburg Russia
3. Department of Biophysics; Institute of Physics; Nanotechnology and Telecommunications; Peter the Great St Petersburg Polytechnic University; Russia