The Rat Grimace Scale: A partially automated method for quantifying pain in the laboratory rat via facial expressions
Susana G Sotocinal, Robert E Sorge, Austin Zaloum, Alexander H Tuttle, Loren J Martin, Jeffrey S Wieskopf, Josiane CS Mapplebeck, Peng Wei, Shu Zhan, Shuren Zhang, Jason J McDougall, Oliver D King and Jeffrey S Mogil*
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