Schwartz, Claude http://orcid.org/0000-0002-6821-4414
Article History
Received: 7 January 2018
Accepted: 3 March 2018
First Online: 26 March 2018
Compliance with ethical standards
:
: The author has a contract as a medical advisor to FH Orthopedics, 68990 Heimsbrunn, France.