Gonzalez EG, Gordon DM.
Arch Phys Med Rehabil. 1990 Nov;71(12):951.
PMID: 2146940

McCarthy JB.
J Am Vet Med Assoc. 1992 Jan 01;200(1):22-3.
PMID: 1531646

Bogaards P.
J Rehabil. 1979 Apr-Jun;45(2):85-6, 90.
PMID: 160947

Yelin EH.
Milbank Q. 1991;69:129-49.
PMID: 1837828

Melia RP.
Am Rehabil. 1976 May-Jun;1(5):2-3.
PMID: 132857

Mahoney RE, Gibofsky A.
J Leg Med. 1992 Mar;13(1):51-75. doi: 10.1080/01947649209510874.
PMID: 1535647

Rothstein MA.
JAMA. 2015 Jun 09;313(22):2221-2. doi: 10.1001/jama.2015.3417.
PMID: 26057278