Pötschger, U., Heinzl, H., Valsecchi, M., & Mittlböck, M. (2018). Assessing the effect of a partly unobserved, exogenous, binary time-dependent covariate on survival probabilities using generalised pseudo-values. BMC Medical Research Methodology, 18(1), 14. https://doi.org/10.1186/s12874-017-0430-5 (Original work published 2018)