title: Dangers of countercurrent use in swimming-pools.
authors: J
authors: J
authors: Mayr
authors: K
authors: K
authors: Lawrenz
authors: M
authors: M
authors: Häusler
mesh_terms: D002675:Child, Preschool; D005260:Female; D006801:Humans; D010502:Perineum / Q000293:injuries*; D011312:Pressure; D013551:Swimming Pools; D014621:Vagina / Q000293:injuries*