| http://www.w3.org/ns/prov#value | - Chronic yawning is of medical importance because it is symptomatic of pathology such as brain lesions and tumors, hemorrhage, motion sickness, chorea, and encephalitis (Barbizet, 1958, Graybiel & Knepton, 1976; Heusner, 1946, Jurko & Andy, 1975).
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