@article{article3699,
  title = {How useful are β-blockers in cardiovascular disease?},
  author = {Bangalore, S. and Parkar, S. and H.  Messerli, F.},
  journal = {The Anatolian Journal of Cardiology},
  year = {2006},
  volume = {6},
  pages = {358-363},
  doi = {}
}