title: Erratum to: Plasma and saliva miR-21 expression in colorectal cancer patients.
authors.affiliation: Department of Clinical Laboratory Diagnostics with a course of Molecular Medicine, First Pavlov State Medical University of St. Petersburg, 6/8 Lev Tolstoy Street, St. Petersburg, 197022, Russia. alexei.sazanov@technolog.edu.ru.|Department of the Molecular Biotechnology, Saint-Petersburg State Technological Institute (Technical University), St. Petersburg, Russia. alexei.sazanov@technolog.edu.ru.
authors.forename: A A
authors.initials: AA
authors.lastname: Sazanov
authors.affiliation: Department of Surgery and Emergency Medicine, First Pavlov State Medical University of St. Petersburg, St. Petersburg, Russia.
authors.forename: E V
authors.initials: EV
authors.lastname: Kiselyova
authors.affiliation: Department of Surgery and Emergency Medicine, First Pavlov State Medical University of St. Petersburg, St. Petersburg, Russia.
authors.forename: A A
authors.initials: AA
authors.lastname: Zakharenko
authors.affiliation: School of Biosciences, University of Kent, Canterbury, UK.
authors.forename: M N
authors.initials: MN
authors.lastname: Romanov
authors.affiliation: Department of Clinical Laboratory Diagnostics with a course of Molecular Medicine, First Pavlov State Medical University of St. Petersburg, 6/8 Lev Tolstoy Street, St. Petersburg, 197022, Russia.
authors.forename: M I
authors.initials: MI
authors.lastname: Zaraysky