The base population was not related, nonselected and randomly sampled.
JORGE LUIS FERREIRA, ARCADIO DE LOS REYES BORJAS, ROBERTO CARVALHEIRO, RAYSILDO BARBOSALÔBO 2011, 'EFEITOS DA INCLUSÃO OU NÃO DA COVARIÂNCIA GENÉTICA DIRETA-MATERNAL NO MODELO E DOSVALORES REAIS DAS (CO)VARIÂNCIAS SOBRE SUAS ESTIMATIVAS PARA PESO À DESMAMA EM BOVINOSDE CORTE', Ciência Animal Brasileirawww.revistas.ufg.br/index.php/vet/article/view/5503/9669. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
In a large series of nonselected autopsy investigations an accessory spleen was found in 10–30%.
Anita Kurmann, Jean-Marie Michel, Edouard Stauffer, Bernhard Egger 2010, 'Intrapancreatic Accessory Spleen Misdiagnosed as a Nonsecreting Endocrine Tumor: CaseReport and Review of the Literature', Case Reports in Gastroenterologyhttp://www.karger.com/Article/FullText/318857. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)