RT Journal Article SR Electronic T1 Renal and hormonal abnormalities in chronic obstructive pulmonary disease (COPD) JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 989 OP 991 DO 10.1136/thx.53.11.989 VO 53 IS 11 A1 Paolo Palange YR 1998 UL http://thorax.bmj.com/content/53/11/989.abstract AB