From left to right: Anton Ryzhkov (MRI-specialist, St. Petersburg), Vladimir Fokin (Head, MRI department St. Petersburg), Simone Duss (eSATIS Study Coordinator), Lyudmila Korostovtseva (main responsible eSATIS investigator St. Petersburg), Valeria Kemstach (Psychologist St. Petersburg) & Yurii Sviryaev (Head, Somnology Lab, Almazov Centre St. Petersburg)