<P>求论文,</P><FONT face=CMR12><P align=left>Dolan, P. , C. Gudex, P. Kind and A. Williams 1996. "The time trade-off method: results from a general population study", </FONT><FONT face=CMTI12>Health Economics </FONT><FONT face=CMR12>5, pp. 141-154.</P></FONT>