Secondary Endpoints : Time until death, non cardiovascular death, cardiovascular death, hospitalization due to deterioration of heart failure or cardiovascular death, hospitalization for other reasons or death, hospitalization for cardiovascular cause or cardiovascular death, percent of follow up days which patient survives and is not hospitalized for cardiovascular cause, percent of follow up days which patient survives and is not hospitalized for other reason, time to first adequate shock (in patients with ICD, evaluation of appropriateness will also be made by the ERC) or cardiovascular death, changes in NYHA class as compared to baseline, changes in difference in health costs between the two treatment groups, changes in QoL (Minnesota, Euroqol 5D (EQ5D)) as compared to baseline, changes in renal function (based on serum creatinine) as compared to baseline, changes in result of Six Minute Walking Test (6MWT) (50) as compared to baseline,changes of AHI and oxygen desaturation index compared to baseline, AHI below 10 per hour at twelve months and ODI below 5 per hour at twelve months, atrial fibrillation at follow-up visits.