Karava, Vasiliki
Printza, Nikoleta
Dotis, John
Demertzi, Despoina
Antza, Christina
Kotsis, Vasilios
Papachristou, Fotios
Stabouli, Stella
Article History
Received: 10 September 2018
Revised: 23 December 2018
Accepted: 22 February 2019
First Online: 29 March 2019
Compliance with ethical standards
: This study was approved by the local Ethics Committee and was conducted in accordance with the 1964 Helsinki Declaration or comparable standards. Informed consent was obtained from the parents of all the participants.
: The authors declare that they have no conflict of interest.