Guest editor, "Special Issue on: ""E-Health Systems and Semantic Web", 2015, International Journal of Big Data Intelligence, Editor in Chief: Prof. Ching-Hsien Hsu, Guest Editors: Duygu Çelik Ertuğrul, Atilla Elçi, Published by InderScience, ISSN online: 2053-1397, ISSN online: 2053-1397, ISSN print: 2053-1389, 15 October, 2015- 1 March, 2016, CFP: http://www.inderscience.com/info/ingeneral/cfp.php?id=2973.