| assign.folds | Assign observations to folds in a balanced way | 
| cv | Conduct cross-validation | 
| data.frame2glmnet.matrix | Convert a data.frame into a matrix ready for glmnet | 
| data.frame2glmnet.matrix_fit | Convert a data.frame into a matrix ready for glmnet | 
| glmnet_fit | Obtain and use a glmnet prediction model | 
| glmnet_get.items.relevance | Get the relevance of the model items | 
| glmnet_get.main.model | Get the main glmnet model across imputations and folds | 
| glmnet_predict | Obtain and use a glmnet prediction model | 
| impute.glmnet.matrix | Impute missing variables in a glmnet matrix multiple times | 
| impute.glmnet.matrix_fit | Impute missing variables in a glmnet matrix multiple times | 
| surv2binary | Convert a "Surv" object into binary variables at different time points |