Modified functions of the package 'pcalg' and some additional functions
to run the PC and the FCI (Fast Causal Inference) algorithm for constraint-based
causal discovery in incomplete and multiply imputed datasets.
Foraita R, Friemel J, Günther K, Behrens T, Bullerdiek J, Nimzyk R, Ahrens W, Didelez V (2020)