RT Journal Article SR Electronic T1 A surprising cause of polycythaemia JF Thorax JO Thorax FD BMJ Publishing Group Ltd and British Thoracic Society SP 967 OP 968 DO 10.1136/thoraxjnl-2016-208610 VO 71 IS 10 A1 De Maeyer, N E A1 Van Lommel, S A1 Devos, T A1 Buyse, B A1 Nackaerts, K YR 2016 UL http://thorax.bmj.com/content/71/10/967.abstract AB