7Jensen J,Hedin L,Widell C,et al.Characteristics of heart failure in the elderly:a hospital cohort registry-based study.Int J Cardiol,2008,125:191-196.
8Andrus MR,Loyed JV.Use of beta-adrenoceptor antagonists in older patients with chronic obstructive pulmonary disease and cardiovascular co-morbidity:safety issues.Drugs Aging,2008,25:131-144.
9Mascarenhas J,Lourenco P,Lopes R,et al.Chronic obstructive pulmonary disease in heart failure,prevalence,therapeutic and prognostic implications.Am Heart J,2008,155:521-525.
10Macdonald PS,Hill J,Krum H,et al.The impact of baseline HR and BP on the tolerability of carvedilol in the elderly:the COLA (Carvedilol Open Label Assessment) Ⅱ study.Am J Cardiovasc Drugs,2006,6:401-405.