title: Picture of the month. Congenital hypoplasia of the depressor anguli oris muscle.
authors.affiliation: Department of Pediatrics, University of Louisville School of Medicine, Kentucky, USA.
authors.forename: S M
authors.initials: SM
authors.lastname: Franco
authors.forename: W W
authors.initials: WW
authors.lastname: Tunnessen
mesh_terms: D003448:Crying; D005146:Facial Asymmetry / Q000453:epidemiology* / Q000235:genetics; D005152:Facial Muscles / Q000002:abnormalities*; D005260:Female; D006801:Humans; D007223:Infant