A genome-wide association study of psoriasis and psoriatic arthritis identifies new disease loci. oleh Ying Liu, Cynthia Helms, Wilson Liao, Lisa C Zaba, Shenghui Duan, Jennifer Gardner, Carol Wise, Andrew Miner, M J Malloy, Clive R Pullinger, John P Kane, Scott Saccone, Jane Worthington, Ian Bruce, Pui-Yan Kwok, Alan Menter, James Krueger, Anne Barton, Nancy L Saccone, Anne M Bowcock