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:A randomized trial of endoscopic cyanoacrylate injection for acute gastric variceal bleeding: 0.5 mL versus 1.0 mL.  Endoscopic injection of N-butyl-2-cyanoacrylate is the preferred method to treat acute gastric variceal bleeding (GVB). However, its rebleeding rate remains high. To compare an injection containing 0.5 mL of cyanoacrylate (group A) with an injection containing 1.0 mL of cyanoacrylate (group B). A single-center, randomized, controlled trial. A tertiary referral center. Occurrence of rebleeding. Patients with acute gastric variceal bleeding. Forty-four patients in group A and 47 patients in group B were studied; their clinical characteristics were similar. The treatment stopped active bleeding in approximately 90% of cases in both groups. The rebleeding rate was 29.8% (14/47) in group B compared with 38.6% (17/44) in group A (P = .504; 95% CI, -10.592 to 28.280). On multivariate analysis, concomitant hepatocellular carcinoma, infection, and the size of the gastric varices were independent determinants of rebleeding. More patients in group B than in group A had postinjection fever (>37.5 degrees C) (23/47 vs 12/44, P = .059). Treatment failure, complications, 30-day mortality, and survival did not differ between the 2 groups. Due to the small number of study patients, a double dose of cyanoacrylate injection for GVB cannot be proven to have better hemostatic efficacy than a single dose. Multicenter studies with larger patient numbers are necessary to determine whether a double dose is in fact more efficacious. Output:
{'conditions': 'Gastric Variceal Bleeding', 'interventions': 'Procedure: Cyanoacrylate|Procedure: Cyanoacrylate'}