Evaluation of comorbidity patterns and identification of sub-groups in patients diagnosed with hip osteoarthritis in 94,720 patients from Spain by Pineda Moncusi, M, Strauss, VY, Robinson, DE, Swain, S, Runhaar, J, Kamps, A, Dell'isola, A, Turkiewicz, S, Mallen, C, Kuo, C-F, Coupland, C, Doherty, M, Sarmanova, A, Englund, M, Bierma-Zeinstra, SMA, Zhang, W, Prieto Alhambra, D, Khalid, S