title: The yawning reflex: an upper motor neuron sign in amyotrophic lateral sclerosis.
authors.affiliation: Alfred Hospital, Victoria, Australia. drdavew@bigpond.com
authors.forename: D R
authors.initials: DR
authors.lastname: Williams
mesh_terms: D000690:Amyotrophic Lateral Sclerosis / Q000175:diagnosis* / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008875:Middle Aged; D009046:Motor Neurons / Q000502:physiology*; D015000:Yawning / Q000502:physiology*