[1] First St Petersburg Pavlov State Med Univ, Valdman Inst Pharmacol, St Petersburg, Russia
[2] Boston Univ, Sch Publ Hlth, Boston, MA 02215 USA
[3] Boston Med Ctr, Dept Med, Boston, MA USA
[4] Bekhterev Natl Med Res Ctr Psychiat & Neurol, Dept Addict, St Petersburg, Russia
[5] Smorodintsev Res Inst Influenza, Dept Adm, St Petersburg, Russia
[6] Boston Univ, Sch Med, Boston, MA 02215 USA