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:

Acustimulation wrist bands are not effective for the control of chemotherapy-induced nausea in women with breast cancer . This experiment examined the efficacy of an acustimulation wrist band for the relief of chemotherapy-induced nausea using a randomized three-arm clinical trial ( active acustimulation , sham acustimulation , and no acustimulation ) in 96 women with breast cancer who experienced nausea at their first chemotherapy treatment . Five outcomes related to wrist band efficacy ( acute nausea , delayed nausea , vomiting , QOL , and total amount of antiemetic medication used ) were examined . The five outcomes were examined separately using analysis of covariance controlling for age and severity of past nausea . There were no significant differences in any of these study measures among the three treatment conditions ( P > 0.1 for all ) . Study results do not support the hypothesis that acustimulation bands are efficacious as an adjunct to pharmacological antiemetics for control of chemotherapy-related nausea in female breast cancer patients .
{"Intervention": ["chemotherapy treatment", "wrist band", "Acustimulation wrist bands", "active acustimulation", "antiemetic medication", "acustimulation bands", "acustimulation wrist band", "sham acustimulation", "chemotherapy-induced", "no acustimulation"], "Outcome": ["delayed nausea", "vomiting", "wrist band efficacy", "chemotherapy-related nausea", "chemotherapy-induced nausea", "acute nausea", "severity of past nausea", "QOL", "amount of antiemetic medication used", "total"], "Participant": ["women", "96", "female", "breast cancer", "nausea at their first chemotherapy treatment"]}