4Langley GB, Sheppeard H.Problems associated withpainmeasurementin arthritis:comparison of the visual analogue ang verbal ratingscales[J].Clin Exp Rheumatol,1984,2(3):231-234.
5Cospite M. Double-blind,placebo-controlled evaluation of clinicalactivity and safety of Daflon 500 mg in the treat-ment of acute hemorrhoids.Angiology,1994,45(6Pt2):566-537.