Early-onset head titubation in a child with Poretti-Boltshauser syndrome

Riccardo Masson¹, Elena Piretti¹, Serena Pellegrin¹+4

• ¹From the University of Verona (R.M., E.P., S.P., G.C.); Verona Hospital (E.G.), Italy; Johns Hopkins University (A.P.), Baltimore, MD; IRCCS Santa Lucia Foundation (E.M.V.), Rome; and Department of Molecular Medicine (E.M.V.), University of Pavia, Pavia, Italy.+1