<style face="normal" font="default" size="100%">Trial methodology and patient characteristics did not influence the size of placebo effects on pain in randomized controlled trials</style>

Drupal-Bibcite

31<style face="normal" font="default" size="100%">Trial methodology and patient characteristics did not influence the size of placebo effects on pain in randomized controlled trials</style><style face="normal" font="default" size="100%">Trial methodology and patient characteristics did not influence the size of placebo effects on pain in randomized controlled trials</style>