Text and Data Mining valid from 2018-06-18
Received: 14 November 2017
Accepted: 15 May 2018
First Online: 18 June 2018
: T.L.E., K.X., M.L., R.E.M., M.P.S. and A.D.F. declare no competing interests. H.C.M.M., M.J.B., G.J.L.N. are employed in the robot engineering and development department at Preceyes BV, Eindhoven, the Netherlands, and M.D.d.S. is a shareholder in Preceyes BV.