boot.stepAIC: no visible global function definition for 'update'
boot.stepAIC: no visible binding for global variable 'coef'
boot.stepAIC : <anonymous>: no visible global function definition for
  'anova'
boot.stepAIC: no visible global function definition for 'pnorm'
Undefined global functions or variables:
  anova coef pnorm update
Consider adding
  importFrom("stats", "anova", "coef", "pnorm", "update")
to your NAMESPACE file.
'LazyData' is specified without a 'data' directory
boot.stepAIC: no visible global function definition for ‘update’
boot.stepAIC: no visible binding for global variable ‘coef’
boot.stepAIC : <anonymous>: no visible global function definition for
  ‘anova’
boot.stepAIC: no visible global function definition for ‘pnorm’
Undefined global functions or variables:
  anova coef pnorm update
Consider adding
  importFrom("stats", "anova", "coef", "pnorm", "update")
to your NAMESPACE file.
'LazyData' is specified without a 'data' directory
boot.stepAIC: no visible global function definition for ‘update’
boot.stepAIC: no visible binding for global variable ‘coef’
boot.stepAIC : <anonymous>: no visible global function definition for
  ‘anova’
boot.stepAIC: no visible global function definition for ‘pnorm’
Undefined global functions or variables:
  anova coef pnorm update
Consider adding
  importFrom("stats", "anova", "coef", "pnorm", "update")
to your NAMESPACE file.
'LazyData' is specified without a 'data' directory
boot.stepAIC: no visible global function definition for ‘update’
boot.stepAIC: no visible binding for global variable ‘coef’
boot.stepAIC : <anonymous>: no visible global function definition for
  ‘anova’
boot.stepAIC: no visible global function definition for ‘pnorm’
Undefined global functions or variables:
  anova coef pnorm update
Consider adding
  importFrom("stats", "anova", "coef", "pnorm", "update")
to your NAMESPACE file.
'LazyData' is specified without a 'data' directory
boot.stepAIC: no visible global function definition for 'update'
boot.stepAIC: no visible binding for global variable 'coef'
boot.stepAIC : <anonymous>: no visible global function definition for
  'anova'
boot.stepAIC: no visible global function definition for 'pnorm'
Undefined global functions or variables:
  anova coef pnorm update
Consider adding
  importFrom("stats", "anova", "coef", "pnorm", "update")
to your NAMESPACE file.
'LazyData' is specified without a 'data' directory
boot.stepAIC: no visible global function definition for 'update'
boot.stepAIC: no visible binding for global variable 'coef'
boot.stepAIC : <anonymous>: no visible global function definition for
  'anova'
boot.stepAIC: no visible global function definition for 'pnorm'
Undefined global functions or variables:
  anova coef pnorm update
Consider adding
  importFrom("stats", "anova", "coef", "pnorm", "update")
to your NAMESPACE file.
'LazyData' is specified without a 'data' directory
boot.stepAIC: no visible global function definition for ‘update’
boot.stepAIC: no visible binding for global variable ‘coef’
boot.stepAIC : <anonymous>: no visible global function definition for
  ‘anova’
boot.stepAIC: no visible global function definition for ‘pnorm’
Undefined global functions or variables:
  anova coef pnorm update
Consider adding
  importFrom("stats", "anova", "coef", "pnorm", "update")
to your NAMESPACE file.
'LazyData' is specified without a 'data' directory
boot.stepAIC: no visible global function definition for ‘update’
boot.stepAIC: no visible binding for global variable ‘coef’
boot.stepAIC : <anonymous>: no visible global function definition for
  ‘anova’
boot.stepAIC: no visible global function definition for ‘pnorm’
Undefined global functions or variables:
  anova coef pnorm update
Consider adding
  importFrom("stats", "anova", "coef", "pnorm", "update")
to your NAMESPACE file.
'LazyData' is specified without a 'data' directory
boot.stepAIC: no visible global function definition for ‘update’
boot.stepAIC: no visible binding for global variable ‘coef’
boot.stepAIC : <anonymous>: no visible global function definition for
  ‘anova’
boot.stepAIC: no visible global function definition for ‘pnorm’
Undefined global functions or variables:
  anova coef pnorm update
Consider adding
  importFrom("stats", "anova", "coef", "pnorm", "update")
to your NAMESPACE file.
'LazyData' is specified without a 'data' directory
boot.stepAIC: no visible global function definition for ‘update’
boot.stepAIC: no visible binding for global variable ‘coef’
boot.stepAIC : <anonymous>: no visible global function definition for
  ‘anova’
boot.stepAIC: no visible global function definition for ‘pnorm’
Undefined global functions or variables:
  anova coef pnorm update
Consider adding
  importFrom("stats", "anova", "coef", "pnorm", "update")
to your NAMESPACE file.
'LazyData' is specified without a 'data' directory
boot.stepAIC: no visible global function definition for 'update'
boot.stepAIC: no visible binding for global variable 'coef'
boot.stepAIC : <anonymous>: no visible global function definition for
  'anova'
boot.stepAIC: no visible global function definition for 'pnorm'
Undefined global functions or variables:
  anova coef pnorm update
Consider adding
  importFrom("stats", "anova", "coef", "pnorm", "update")
to your NAMESPACE file.
'LazyData' is specified without a 'data' directory
boot.stepAIC: no visible global function definition for ‘update’
boot.stepAIC: no visible binding for global variable ‘coef’
boot.stepAIC : <anonymous>: no visible global function definition for
  ‘anova’
boot.stepAIC: no visible global function definition for ‘pnorm’
Undefined global functions or variables:
  anova coef pnorm update
Consider adding
  importFrom("stats", "anova", "coef", "pnorm", "update")
to your NAMESPACE file.
boot.stepAIC: no visible global function definition for 'update'
boot.stepAIC: no visible binding for global variable 'coef'
boot.stepAIC : <anonymous>: no visible global function definition for
  'anova'
boot.stepAIC: no visible global function definition for 'pnorm'
Undefined global functions or variables:
  anova coef pnorm update
Consider adding
  importFrom("stats", "anova", "coef", "pnorm", "update")
to your NAMESPACE file.