Speidel M, Drechsler J, Jolani S. The R Package hmi: A Convenient Tool for Hierarchical Multiple Imputation and Beyond. J. Stat. Soft. [Internet]. 2020 Oct. 7 [cited 2024 Apr. 29];95(9):1-48. Available from: https://www.jstatsoft.org/index.php/jss/article/view/v095i09