{"description":"Others: laser and surgery complications for 12 months","eventGroups":[{"description":"treated with both of PDL and Celecoxib","id":"EG000","otherNumAffected":0,"otherNumAtRisk":8,"seriousNumAffected":0,"seriousNumAtRisk":8,"title":"Experiment"},{"description":"treatd with CO2 laser or microsurgery","id":"EG001","otherNumAffected":0,"otherNumAtRisk":2,"seriousNumAffected":0,"seriousNumAtRisk":2,"title":"Control"}],"frequencyThreshold":"0","timeFrame":"Primary: cardiovascular events for 12 months"}