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Created page with "== Target Article == Comparison of tramadol and pethidine for postanesthetic shivering in elective cataract surgery; H Zahedi; 2004; doi_citing_unknown == Retraction == A comparison of urapidil, clonidine, meperidine and placebo in preventing postanesthetic shivering ; Swen N Piper Wolfgang H Maleck Joachim Boldt Stefan W Suttner Christian C Schmidt Daniel G P Re; 04/01/2000 ; https://doi.org/10.1213/00000539-200004000-00033 == Citation piece == Note: Open to appe..."