Drupal-Bibcite31<style face="normal" font="default" size="100%">Risk of herpes zoster after exposure to varicella to explore the exogenous boosting hypothesis: self controlled case series study using UK electronic healthcare data</style><style face="normal" font="default" size="100%">Risk of herpes zoster after exposure to varicella to explore the exogenous boosting hypothesis: self controlled case series study using UK electronic healthcare data</style>