***TASK*** the task is to summarize an input biomedical literature in six sentences 
    ***INPUT*** the input is a biomedical literature 
    ***OUTPUT*** the output is the summary of an input biomedical literature in six sentences 
    ***DOCUMENTATION*** 
    ***EXAMPLES*** 
    Input: A double blind trial , was design ed , in which 118 patients undergoing the removal of impacted wisdom teeth were r and omly divided into the following groups ; 41 patients received Metronidazole , 39 patients received Arnica Montana , 38 patients received the placebo . Metronidazole was more effective in pain control than Arnica ( p less than 0.001 ) and placebo ( p less than 0.01 ) . It prevented swelling better than Arnica ( p less than 0.01 ) and placebo ( p less than 0.05 ) and was more effective in promoting healing than Arnica ( p less than 0.01 ) and placebo ( p greater than 0.02 ) . Arnica Montana appeared to give rise to greater pain than placebo ( p less than 0.05 ) and caused more swelling than the placebo ( p less than 0.01 ) 
    Output:
    
On balance , they do not suggest that homeopathic arnica is more efficacious than placebo .
CONCLUSION The cl aim that homeopathic arnica is efficacious beyond a placebo effect is not supported by rigorous clinical trials