110. Hro´bjartsson A, Gøtzsche PC. Is the placebo powerless? An analysis of clinical trials comparing placebo with no treatment. N Engl J Med. 2001;344: 1594-602. [PMID: 11372012] 111. Rothwell PM. External validity of randomised controlled trials: whom do the results of this trial apply?”. Lancet. “to 2005;365:82-93. [PMID: 15639683] 112. Randomised trial of endarterectomy for recently symptomatic carotid stenosis: final results of the MRC European Carotid Surgery (ECST). Lancet. 1998;351:1379-87. [PMID: 9593407]
110. Hro´bjartsson A, Gøtzsche PC. Is the placebo powerless? An analysis of clinical trials comparing placebo with no treatment. N Engl J Med. 2001;344: 1594-602. [PMID: 11372012] 111. Rothwell PM. External validity of randomised controlled trials: “to whom do the results of this trial apply?”. Lancet. 2005;365:82-93. [PMID: 15639683] 112. Randomised trial of endarterectomy for recently symptomatic carotid stenosis: final results of the MRC European Carotid Surgery (ECST). Lancet. 1998;351:1379-87. [PMID: 9593407]