Li, X;    Xie, S;    McColgan, P;    Tabrizi, SJ;    Scahill, R;    Zeng, D;    Wang, Y;      (2018)    Learning Subject-Specific Directed Acyclic Graphs With Mixed Effects Structural Equation Models From Observational Data.                   Frontiers in Genetics , 9     , Article 430.  10.3389/fgene.2018.00430 <https://doi.org/10.3389/fgene.2018.00430>.       Green open access