title: Commentary on "Behavior of perineum during delivery before fetal head expulsion".
authors.affiliation: Department of Gynecology and Obstetrics, University Hospital and Medical Faculty in Pilsen, Charles University in Prague, Alej Svobody 80, Pilsen, 304 60, Czech Republic. rusavyz@fnplzen.cz.|Biomedical Centre, Faculty of Medicine in Plzen, Charles University in Prague, Plzen, Czech Republic. rusavyz@fnplzen.cz.
authors.forename: Zdenek
authors.initials: Z
authors.lastname: Rusavy
authors.affiliation: Department of Gynecology and Obstetrics, University Hospital and Medical Faculty in Pilsen, Charles University in Prague, Alej Svobody 80, Pilsen, 304 60, Czech Republic.|Biomedical Centre, Faculty of Medicine in Plzen, Charles University in Prague, Plzen, Czech Republic.
authors.forename: Vladimir
authors.initials: V
authors.lastname: Kalis
mesh_terms: D036861:Delivery, Obstetric; D005333:Fetus; D006257:Head; D006801:Humans; D007746:Labor Presentation; D010502:Perineum