1 Department of Nutrition and Dietetics, Harokopio University, Athens, Greece.
2 Department of Clinical Therapeutics, Alexandra General Hospital, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece.
3 First Department of Surgery, Laikon General Hospital, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece.
4 Department of Surgery, Queen Elizabeth Hospital Birmingham, Birmingham, United Kingdom.
5 First Propaedeutic Department of Surgery, Hippocration General Hospital, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece.