RT Journal Article SR Electronic T1 Botulinum toxin is a useful treatment in excessive drooling of saliva JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 697 OP 697 DO 10.1136/jnnp.67.5.697 VO 67 IS 5 A1 KP BHATIA A1 A MÜNCHAU A1 P BROWN YR 1999 UL http://jnnp.bmj.com/content/67/5/697.1.abstract AB