{"groups":[{"description":"Patients receive porfimer sodium subcutaneously followed by photodynamic therapy (PDT) comprising laser light delivered by a single or a diffuser (i.e., for broad areas of dysplasia) fiberoptic lens fiber.\n\nporfimer sodium: IV","id":"FG000","title":"Porfimer Sodium"}],"periods":[{"dropWithdraws":[{"reasons":[{"groupId":"FG000","numSubjects":"4"}],"type":"Disease Progression"},{"reasons":[{"groupId":"FG000","numSubjects":"4"}],"type":"Physician Decision"},{"reasons":[{"groupId":"FG000","numSubjects":"2"}],"type":"Other Not Specified"}],"milestones":[{"achievements":[{"groupId":"FG000","numSubjects":"30"}],"type":"STARTED"},{"achievements":[{"groupId":"FG000","numSubjects":"20"}],"type":"COMPLETED"},{"achievements":[{"groupId":"FG000","numSubjects":"10"}],"type":"NOT COMPLETED"}],"title":"Overall Study"}]}