You will be shown an abstract from a biomedical research paper. Given this abstract, your task is to extract all unique entities of the following types: ["Outcome", "Participant", "Intervention"].

Please return the output as a JSON object of the format: {"Participant" : ["patients with COPD", ...], "Intervention" : ["Atenolol", ...], "Outcome" : ["blood pressure", ...]}. The keys should be entity types and values should be lists of extracted entities belonging to the corresponding type. If you cannot find entities belonging to a specific type, the value should be [].

Only output the JSON object and do not include any additional text.

Abstract:

A feasibility study exploring the role of Chinese herbal medicine in the treatment of endometriosis . BACKGROUND Endometriosis is a common and disabling gynecologic condition affecting between 5 % and 15 % of women of childbearing age . Conventional medical intervention has unpleasant side-effects , and symptoms frequently return after treatment . Preliminary evidence suggests Chinese herbal medicine ( CHM ) may contribute to the treatment of endometriosis . OBJECTIVES The aims of this study were to test the feasibility of a novel methodology for investigating individualized decoctions of CHM rigorously and to gather preliminary data on the treatment effect of CHM for a larger definitive trial . DESIGN This was a 16-week prospective , double blinded , randomized controlled trial of 40 women with laparoscopically confirmed endometriosis . SETTINGS The trial was conducted at a private CHM clinic in Hove ( U.K. ) and at a National Health Service outpatient clinic in London ( U.K. ) . INTERVENTIONS Participants were initially randomized to either wait-list control ( WLC ) or treatment groups to receive either individualized CHM decoctions or a therapeutically inert placebo decoction . OUTCOME MEASURES Four 10-cm visual analogue scales ( VAS ) were used to measure menstrual pain , daily pain , and pain on intercourse and bowel movement ; these measurements were recorded weekly . The Endometriosis Health Profile-30 ( EHP-30 ) endometriosis-specific quality-of-life questionnaire was completed at the beginning and at the end of the trial . The Measure Yourself Medical Outcomes Profile ( MYMOP ) a patient-centered health questionnaire was completed monthly . Liver and renal function was measured at 0 , 4 , 8 , and 16 weeks . RESULTS Twenty-eight ( 28 ) women completed the trial . High dropout rates led to the suspension of the WLC . Randomization , double blinding , and allocation concealment was achieved successfully . Adjusted mean differences favored the active treatment in the EHP-30 and MYMOP scores . VAS scores favored the active treatment for relief of menstrual pain and the placebo group for reduction of daily pain . CONCLUSIONS the methodology successfully allowed individualized CHM decoctions to be tested rigorously . There are nonspecific contextual effects from CHM that require further investigation . Provisional data were generated to warrant a larger , more-definitive study .
{"Intervention": ["wait-list control ( WLC )", "therapeutically inert placebo decoction", "Chinese herbal medicine", "Chinese herbal medicine ( CHM )", "individualized CHM decoctions"], "Outcome": ["VAS scores", "measure menstrual pain , daily pain , and pain on intercourse and bowel movement ;", "EHP-30 and MYMOP scores", "Measure Yourself Medical Outcomes Profile ( MYMOP ) a patient-centered health questionnaire", "Liver and renal function", "Endometriosis Health Profile-30 ( EHP-30 ) endometriosis-specific quality-of-life questionnaire"], "Participant": []}