Monaco, V.
Tropea, P.
Aprigliano, F.
Martelli, D.
Parri, A.
Cortese, M.
Molino-Lova, R.
Vitiello, N.
Micera, S.
Article History
Received: 20 December 2016
Accepted: 23 March 2017
First Online: 11 May 2017
Competing interests
: N.V. and S.M. have financial interests in the company IUVO SRL, which will bring on the market an engineered version of the APO; N.V. is a co-inventor of the torsional spring adopted in the APO actuation unit.