@article{björkerud_1991, 
  title={Effects of transforming growth factor-beta 1 on human arterial smooth muscle cells in vitro.}, 
  volume={11}, 
  DOI={10.1161/01.atv.11.4.892}, 
  publisher={Ovid Technologies (Wolters Kluwer Health)}, 
  author={Björkerud}, 
  year={1991}
  }