Wu, X
Liu, J
Tanadini, L G
Lammertse, D P
Blight, A R
Kramer, John L K
Scivoletto, G
Jones, L
Kirshblum, S
Abel, R
Fawcett, J
Field-Fote, E
Guest, J
Levinson, B
Maier, D
Tansey, K
Weidner, N
Tetzlaff, W G
Hothorn, T
Curt, A
Steeves, J D
Article History
Received: 11 August 2014
Revised: 16 November 2014
Accepted: 19 November 2014
First Online: 16 December 2014
Competing interests
: The authors declare no conflict of interest.