Key points are not available for this paper at this time.
Dworkin, Robert H.a,*; Turk, Dennis C.b; Farrar, John T.c; Haythornthwaite, Jennifer A.d; Jensen, Mark P.b; Katz, Nathaniel P.e; Kerns, Robert D.f; Stucki, Geroldg; Allen, Robert R.h; Bellamy, Nicholasi; Carr, Daniel B.j; Chandler, Juliek; Cowan, Penneyl; Dionne, Raymondm; Galer, Bradley S.n; Hertz, Sharono; Jadad, Alejandro R.p; Kramer, Lynn D.q; Manning, Donald C.r; Martin, Susans; McCormick, Cynthia G.t; McDermott, Michael P.u; McGrath, Patrickv; Quessy, Stevew; Rappaport, Bob A.o; Robbins, Wendyex; Robinson, James P.b; Rothman, Margarety; Royal, Mike A.z; Simon, Leeo; Stauffer, Joseph W.aa; Stein, Wendyab; Tollett, Janeac; Wernicke, Joachimad; Witter, Jameso Author Information
Dworkin et al. (Sat,) studied this question.