RT Journal Article SR Electronic T1 Differential cyanosis and clubbing: signs of an Era gone by JF Heart Asia FD BMJ Publishing Group Ltd, British Cardiovascular Society and Asia Pacific Heart Association SP 168 OP 168 DO 10.1136/heartasia-2012-010184 VO 4 IS 1 A1 Srivatsa Nadig A1 Aditya Kapoor A1 Sudeep Kumar YR 2012 UL http://heartasia.bmj.com/content/4/1/168.abstract AB