Article info

Download PDFPDF
Happy birthday? An observational study


  1. Correspondence to Dr Gabrielle E Kelly, School of Mathematics and Statistics, University College Dublin, Dublin 4, Ireland; gabrielle.kelly{at}
View Full Text


Kelly GE, Kelleher CC
Happy birthday? An observational study

Publication history

  • Received May 30, 2018
  • Revised August 22, 2018
  • Accepted August 31, 2018
  • First published September 27, 2018.
Online issue publication 
November 08, 2018

Article Versions

Request permissions

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.