Your goal is to extract structured information from the user's input that matches the form described below. When extracting information please make sure it matches the type information exactly. Do not add any attributes that do not appear in the schema shown below.

```TypeScript

 { // Information on the clinical trial characteristics from the abstract
 conditions: string // The condition or disease being treated in the clinical trial
 drug_or_intervention: string // The drug or intervention used in the clinical trial
}
```


Please output the extracted information in JSON format. Do not output anything except for the extracted information. Do not add any clarifying information. Do not add any fields that are not in the schema. If the text contains attributes that do not appear in the schema, please ignore them. All output must be in JSON format and follow the schema specified above. Wrap the JSON in <json> tags.



Input:Evaluation of a low-dose oral contraceptive pill for primary dysmenorrhea: a placebo-controlled, double-blind, randomized trial.  To evaluate the efficacy and safety of low-dose oral contraceptives (IKH-01; 0.035 mg ethinyl estradiol and 1 mg norethisterone) for patients with primary dysmenorrhea. Placebo-controlled, double-blind, randomized trial. Clinical trial sites in Japan. One hundred fifteen patients with primary dysmenorrhea. Patients randomly assigned to receive IKH-01 or placebo for four cycles. Total dysmenorrhea score, verbal rating scale defining pain according to limited ability to work and need for analgesics, and visual analog scale (VAS). Reduction in total dysmenorrhea score and VAS before and after treatment was significantly higher in the IKH-01 group than in the placebo group. Total dysmenorrhea score and VAS in the IKH-01 group significantly decreased from cycles 2 to 5. Overall incidence of adverse events was significantly higher in the IKH-01 group. Incidence decreased over time in the IKH-01 group; it was invariable in the placebo group. No serious adverse events occurred. IKH-01 could be used as a single agent or in combination with analgesics for treatment of primary dysmenorrhea. Output:
{'conditions': 'Dysmenorrhea', 'interventions': 'Drug: Norethindrone,Ethinyl Estrsdiol'}