The 'risus sardonicus' of multiple system atrophy.
Wenning
Gregor K
GK
Geser
Felix
F
Poewe
Werner
W
D004421:Dystonia / Q000150:complications; D005152:Facial Muscles / Q000002:abnormalities*; D005260:Female; D006801:Humans; D019578:Multiple System Atrophy / Q000150:complications / Q000175:diagnosis*; D020734:Parkinsonian Disorders / Q000175:diagnosis*