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

Siegel P, Sussman M.
Caring. 1992 Feb;11(2):38-9.
PMID: 10170916

Blehart B.
J Med Pract Manage. 2002 Jul-Aug;18(1):50-1.
PMID: 12235950

Litch S.
J Law Ethics Dent. 1990;3:88-90.
PMID: 2151524

Smith RB.
Occup Health Saf. 1992 Jul;61(7):4.
PMID: 1387925

Deer TE, Wilson AS.
Tort Trial Insur Pract Law J. 2006;41(2):363-92.
PMID: 16685810

Blanck PD, Pope MH.
Spine (Phila Pa 1976). 1995 Mar 01;20(5):511-2.
PMID: 7604317