Bernard SalaniƩ

December 21, 2015 – January 6, 2016

Roger Moon

October 12, 2015 – October 16, 2015

Xiaohong Chen

May 14, 2015 – May 22, 2015

Azeem Shaikh

April 20, 2015 – May 1, 2015

Hidehiko Ichimura

February 1, 2015 – March 30, 2015

Stepana Lazarova

September 1, 2014 – May 30, 2015

Emmanuel Guerre

September 1, 2014 – May 30, 2015