Cardiology Department, General Hospital of Giannitsa, End of Semertzidi, Giannitsa 58100, Greece. Electronic address: antonis_samaras@yahoo.gr. Cardiology Department, General Hospital of Karditsa, End of Tayropos str, Karditsa 43100, Greece. Electronic address: ktsarouhas14@yahoo.gr. Cardiology Department, General Hospital of Giannitsa, End of Semertzidi, Giannitsa 58100, Greece. Electronic address: epasxalidis@hotmail.co.uk. Department of Cardiology, University Hospital of Larissa, School of Medicine, University of Thessaly, Mezourlo, Larissa 41110, Greece. Electronic address: ggiamou@emory.edu. Department of Cardiology, University Hospital of Larissa, School of Medicine, University of Thessaly, Mezourlo, Larissa 41110, Greece. Electronic address: ftriposk@med.uth.gr. General Chemical State Laboratory of Greece, 16 Tsocha Str, Athens 11521, Greece. Electronic address: chtsitsi@yahoo.com. Department of Biochemistry and Biotechnology, University of Thessaly, Ploutonos 26 & Aiolou, Larissa 41221, Greece. Electronic address: beckericious@gmail.com. Department of Biochemistry and Biotechnology, University of Thessaly, Ploutonos 26 & Aiolou, Larissa 41221, Greece. Electronic address: nikgkoutz@gmail.com. Department of Biochemistry and Biotechnology, University of Thessaly, Ploutonos 26 & Aiolou, Larissa 41221, Greece. Electronic address: dkouret@uth.gr.