@article{erkan2000-11128669,
  author  = {Erkan, D. and Yazici, Y. and Sobel, R. and Lockshin, M. D.},
  title   = {{Primary antiphospholipid syndrome: functional outcome after 10 years}},
  journal = {The Journal of rheumatology},
  year    = {2000},
  pmid    = {11128669}
}