 TWO SETS OF PATIENTS WILL BE RANDOMIZED INTO THIS THIRD ARM OF THE TRIAL: THOSE WHO COMPLETED THE 12-MONTH STUDY ASSESSMENT OLD PATIENTS AND THOSE WHO ARE JUST ENTERING THE TRIAL NEW PATIENTS. THE FORMER WILL DETERMINE IF THE TELEPHONE MAINTANENCE PROGRAM IS EFFECTIVE FOR PATIENTS WHO COMPLETED CST TREATMENT OVER A YEAR AGO; THE LATTER WILL DETERMINE IF IT IS EFFECTIVE FOR PATIENTS WHEN USED IMMEDIATELY AT THE END OF CST TREATMENT. A TOTAL OF 50 PATIENTS WILL PARTICIPATE IN THE THIRD ARM OF THE TRIAL. OUTCOMES WILL BE MEASURED PRIOR TO THE START OF THE TELPHONE MAINTANENCE PROGRAM AND AT THE END OF THE 4-MONTH PROGRAM. OUTCOME ASSESSMENTS WILL BE IDENTICAL TO THOSE IN THE MAIN TRIAL. 