Soccer Win = Baby Boom

In one month, May 2009, the Spanish soccer club FC Barcelona won three major trophies which were described as “extraordinary and emotive triumphs.”  It appears that the way these successes were celebrated took place off the field as well because there was a transitory, never to be repeated, rise in the birth rate in local hospitals, precisely nine months later (Montesinos et al BMJ 2013;347:f7387).