@article{21edeb7c1c7d4d2089f4425d4d0720df,
  title   = "Response to Letter Regarding Article, {"}The Effects of Vitamin D Supplementation on Physical Function and Quality of Life in Older Heart Failure Patients: A Randomized Controlled Trial{"}",
  author  = "Witham, {Miles D.} and Crighton, {Linda J.} and Gillespie, {Neil D.} and Struthers, {Allan D.} and McMurdo, {Marion E. T.}",
  year    = "2010",
  volume  = "3",
  number  = "4",
  pages   = "E25--E25",
  journal = "Circulation: Heart Failure",
  issn    = "1941-3289",
}