Vitamin D deficiency and insufficiency in children with osteopenia or osteoporosis.

@article{Rovner2008VitaminDD,
  title={Vitamin D deficiency and insufficiency in children with osteopenia or osteoporosis.},
  author={Alisha J. Rovner and Ryan S Miller},
  journal={Pediatrics},
  year={2008},
  volume={122 4},
  pages={907-8; author reply 908-9}
}