時間依存型共変量

• Ulrika Wahlby, Alison H. Thomson, Peter A. Milligan, and Mats O. Karlsson, "Models for time-varying covariates in population pharmacokinetic-pharmacodynamic analysis"
• L.Li, X.Lin, M.B.Brown, S.Gupta, K.H.Lee (2004), "A population pharmacokinetic model with time-dependent covariates measured with errors"