Gkantidis, Nikolaos
Dritsas, Konstantinos
Ren, Yijin
Halazonetis, Demetrios
Katsaros, Christos
Article History
Received: 18 February 2020
Accepted: 21 May 2020
First Online: 22 June 2020
Competing interests
: Author D. Halazonetis owns stock in dHAL Software, the company that markets Viewbox 4. Authors N. Gkantidis, K. Dritsas, Y. Ren, and C. Katsaros declare no competing interests.