@misc{ClaassenSpiegelKallaetal., author = {Claassen, Jens and Spiegel, Rainer and Kalla, Roger and Faldon, Mary and Kennard, Christopher and Schneider, Erich}, title = {A randomised double-blind, cross-over trial of 4-aminopyridine for downbeat nystagmus-effects on slowphase eye velocity, postural stability, locomotion and symptoms}, series = {Journal of neurology, neurosurgery, and psychiatry}, volume = {84}, journal = {Journal of neurology, neurosurgery, and psychiatry}, number = {12}, issn = {0022-3050}, doi = {10.1136/jnnp-2012-304736}, pages = {1392 -- 1399}, language = {en} }