Written by: Sawsan I. Khdair, Kostas Triantafyllidis, Vasileios Papadopoulos, Konstantinos N. Zafeiris, Elena Kanevska-Nikolova, Evangelia Thomadaki, Christina Markou, Nikolaos Th. Konstantinidis, Panagiotis G. Papadimitriou, Panagiotis G. Krimpas, Avraam Salasidis, Stoyan Raichevsky, Evangelos Aoudikos, Ioannis Fragopoulos, Dimitris Kourkouridis, Yavor Saraev, Aikaterini (Katerina) Markou, Eleonora Naxidou, Ioannis M. Bakirtzis, Avraam Salasidis, Antonis Bartsiokas, Chrysa Melkidi, M. G. Varvounis, Balter Puchner, Parthenopi Keltzidou, Nikolaos Kokkas, Thanasis B. Kougoulos, Antonis K. Liapis, Stelios Mouzakis, Christina Vambouri-Dimaki, Panagiotis Vasakos, Iordanis F. Sinamididis, Mara Zacharaki, Grypfalia G. Theodoridou, Nadia Macha-Bizoumi.