Bouwmeester, W., Moons, K.G.M., Kappen, T.H., Klei, W.A. van, Twisk, J.W.R., Eijkemans, M.J.C., Vergouwe, Y. (2013). "Internal validation of risk models in clustered data: a comparison of bootstrap schemes". American Journal of Epidemiology, Vol.177, No.11 June. 1, 2013: p.1209-1217
DOI: https://doi.org/10.1093/aje/kws396

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