mfp
(Package: mfp) :
Fit a Multiple Fractional Polynomial Model
Selects the multiple fractional polynomial (MFP) model which best predicts the outcome. The model may be a generalized linear model or a proportional hazards (Cox) model.
cox
(Package: mfp) :
Family Objects for Cox Proportional Regression Models
Family objects provide a convenient way to specify the details of the models used by functions such as 'glm'. See the documentation for 'glm' for details.
providing 
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