Tang, Yunqing
Dai, Luru
Zhang, Xiaoming
Li, Junbai
Hendriks, Johnny
Fan, Xiaoming
Gruteser, Nadine
Meisenberg, Annika
Baumann, Arnd
Katranidis, Alexandros
Gensch, Thomas
Article History
Received: 3 November 2014
Accepted: 8 May 2015
First Online: 22 June 2015
Competing interests
: The authors declare no competing financial interests.