Replication of a distinct psoriatic arthritis risk variant at the IL23R locus. Issue 7 (25th March 2016) - Budu-Aggrey, Ashley; Bowes, John; Loehr, Sabine; Uebe, Steffen; Zervou, Maria I; Helliwell, Philip; Ryan, Anthony W; Kane, David; Korendowych, Eleanor; Giardina, Emiliano; Packham, Jonathan; McManus, Ross; et al.