@misc{7967,
  author = {H. Forbes and I. Douglas and A. Finn and J. Breuer and K. Bhaskaran and L. Smeeth and S. Packer and S. Langan and K. Mansfield and R. Marlow and H. Whitaker and C. Warren-Gash},
  title = {Risk of herpes zoster after exposure to varicella to explore the exogenous boosting hypothesis: self controlled case series study using UK electronic healthcare data},
  year = {2020},
  journal = {Bmj},
  volume = {368},
  pages = {l6987},
  issn = {0959-8138},
  doi = {10.1136/bmj.l6987},
}