Try riding a horse.
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Rubel
D001921:Brain / Q000502:physiology; D003051:Cochlea / Q000502:physiology; D004059:Diffusion of Innovation; D005544:Forecasting; D006801:Humans; D019359:Knowledge; D010036:Otolaryngology / Q000379:methods / Q000639:trends*; D010819:Physician's Role; D012106:Research / Q000639:trends*; D012107:Research Design; D012586:Science / Q000379:methods / Q000639:trends*