RT Journal Article SR Electronic T1 Hypothyroidism, thyroxine treatment, and the heart. JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 189 OP 190 DO 10.1136/hrt.77.3.189 VO 77 IS 3 A1 M. Gammage A1 J. Franklyn YR 1997 UL http://heart.bmj.com/content/77/3/189.abstract AB