How to cite this article:
Comar VA, Petersen CG, Mauri AL, Matilla MC, Vagnini LD, Renzi A, Petersen B, Nicoletti A, Dieamant F, Oliveira JBA, Baruffi RLR, Franco Jr JG. Influence of the abstinence period on human sperm quality: analysis of 2,458 semen samples. JBRA Assist. Reprod. 2017; 21:306-12.