title: Third- and fourth-degree perineal laceration in vaginal delivery.
authors.forename: Chun-Chieh
authors.initials: CC
authors.lastname: Chia
authors.forename: Soon-Cen
authors.initials: SC
authors.lastname: Huang
mesh_terms: D036861:Delivery, Obstetric / Q000009:adverse effects*; D004841:Episiotomy / Q000009:adverse effects; D005260:Female; D006801:Humans; D015994:Incidence; D022125:Lacerations / Q000453:epidemiology* / Q000209:etiology / Q000601:surgery*; D036801:Parturition; D010502:Perineum / Q000033:anatomy & histology / Q000293:injuries* / Q000601:surgery; D012307:Risk Factors; D015599:Trauma Severity Indices