Headache, hand clumsiness, and “involuntary serial sevens” in a young person Written by Bivens MJ, Boegle AK, Jesus JE, Camacho MA, Tibbles CD, Madsen BEon July 1, 2014 Bivens MJ, Boegle AK, Jesus JE, Camacho MA, Tibbles CD, Madsen BE J Emerg Med 2014 Jul;47(1):71-5 PMID: 24816180 Abstract