Blaser, N., Vizcaya, L.S., Estill, J., Zahnd, C., Kalesan, B., Egger, M., Gsponer, T. and Keiser, O. 2015. gems: An R Package for Simulating from Disease Progression Models. Journal of Statistical Software. 64, 10 (Mar. 2015), 1–22. DOI:https://doi.org/10.18637/jss.v064.i10.