Editing Pyruvate kinase deficiency (section)

==Epidemiology==

Pyruvate kinase deficiency happens worldwide, however northern Europe, and Japan have many cases. The prevalence of pyruvate kinase deficiency is around 51 cases per million in the population (via [[gene frequency]]).<ref name="patient">{{Cite web|title = Pyruvate Kinase Deficiency. Information about PKD {{!}} Patient|url = http://patient.info/doctor/Pyruvate-Kinase-Deficiency.htm#ref-3|website = Patient| date=19 August 2011 |access-date = 2015-11-11|language = en-GB}}</ref><ref>{{Cite journal|last1=Beutler|first1=Ernest|last2=Gelbart|first2=Terri|year=2000|title=Estimating the prevalence of pyruvate kinase deficiency from the gene frequency in the general white population|url=http://www.bloodjournal.org/content/bloodjournal/95/11/3585.full.pdf?sso-checked=true|journal=Blood|volume=95|issue=11|pages=3585–3588|doi=10.1182/blood.V95.11.3585|pmid=10828047|access-date=2016-11-25|archive-url=https://web.archive.org/web/20170821164829/http://www.bloodjournal.org/content/bloodjournal/95/11/3585.full.pdf?sso-checked=true|archive-date=2017-08-21|url-status=dead}}</ref>