| http://www.w3.org/ns/prov#value | - Argiolas A, Melis MR. Bernard B. Brodie Department of Neuroscience, University of Cagliari and Center for Neuropharmacology, National Research Council, Italy. argiolas@unica.it Yawning is a phylogenetically old, stereotyped event that occurs alone or associated with stretching and/or penile erection in humans and in animals from reptiles to birds and mammals under different conditions.
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