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APA Citation
Molenberghs, G., Fitzmaurice, G. M., Kenward, M. G., Tsiatis, A. A. (. A., & Verbeke, G. (Eds.) (2014). Handbook of missing data methodology. Boca Raton : Chapman & Hall/CRC. http://access.bl.uk/ark:/81055/vdc_100044889532.0x000001