1. a Institute of Biomedical Problems , Khoroshevskoye shosse 76‐A, Moscow, 123007, Russia
2. b Department of Physiology , University of Leiden , POBox 9604, Leiden, 2333 AL, The Netherlands
3. c Department of Biology , University of Alma‐Ata , Kazakhstan
4. d Institute of Physiology , Novosibirsk, Russia