PT - JOURNAL ARTICLE AU - Barbizet, Jacques TI - YAWNING AID - 10.1136/jnnp.21.3.203 DP - 1958 Aug 01 TA - Journal of Neurology, Neurosurgery & Psychiatry PG - 203--209 VI - 21 IP - 3 4099 - http://jnnp.bmj.com/content/21/3/203.short 4100 - http://jnnp.bmj.com/content/21/3/203.full SO - J Neurol Neurosurg Psychiatry1958 Aug 01; 21