In the article that appeared on page 422 of the November/December issue, the order of authors' names was listed incorrectly. The correct order is:
Elefsiniotis, I.S., Tsoumakas, K., Kapritsou, M., Magaziotou, I., Derdemezi, A., Mariolis-Sapsakos, T., Katsoulas, Th., & Konstantinou, E. A.
Reference: