International Journal of Epidemiology, 44(5), 1706-21. Oxford University Press Lee, S H, Byrne, E M, Hultman, C M, Kähler, A, Vinkhuyzen, A A, Ripke, S, Andreassen, O A, Frisell, T, Gusev, A, Hu, X, Karlsson, R, Mantzioris, V X, McGrath, J J, Mehta, D, Stahl, E A, Zhao, Q, Kendler, K S, Sullivan, P F, Price, A L, O'Donovan, M, Okada, Y, Mowry, B J, Raychaudhuri, S, Wray, N R, Byerley, W, Cahn, W, Cantor, R M, Cichon, S, Cormican, P, Curtis, D, Djurovic, S, Escott-Price, V, Gejman, P V, Georgieva, L, Giegling, I, Hansen, T F, Ingason, A, Kim, Y, Konte, B, Lee, P H, McIntosh, A, McQuillin, A, Morris, D W, Nöthen, M M, O'Dushlaine, C, Olincy, A, Olsen, L, Pato, C N, Pato, M T, Mattheisen, M & Schizophrenia Working Group of the Psychiatric Genomics Consortium and Rheumatoid Arthritis Consortium International 2015, ' New data and an old puzzle : the negative association between schizophrenia and rheumatoid arthritis ', International Journal of Epidemiology . https://doi.org/10.1093/ije/dyv136 International Journal of Epidemiology, 44(5), 1706-1721. Oxford University Press International Journal of Epidemiology, 44(5), 1706. Oxford University Press International journal of epidemiology, 44(5), 1706-1721. Oxford University Press Lee, S H, Byrne, E M, Hultman, C M, Kähler, A, Vinkhuyzen, A A E, Ripke, S, Andreassen, O A, Frisell, T, Gusev, A, Hu, X, Karlsson, R, Mantzioris, V, McGrath, J J, Mehta, D, Stahl, E A, Zhao, G, Kendler, K S, Sullivan, P F, Price, A L, O'Donovan, M, Okada, Y, Mowry, B J, Raychaudhuri, S, Wray, N R & Posthuma, D 2015, ' New data an old puzzle: the negative association between schizophrenia and rheumatoid arthritis ', International Journal of Epidemiology, vol. 44, no. 5, pp. 1706-1721 . https://doi.org/10.1093/ije/dyv136