MALLARD, C. Reduction in choline acetyltransferase immunoreactivity but not muscarinic-m2 receptor immunoreactivity in the brainstem of SIDS infants. J. Neuropathol. Exp. Neurol. 1999, 58, 255-264
NACHMANSOHN, D. The formation of acetylcholine. A new enzyme : Choline acetylase. J. Neurophysiol. 1943, 6, 397-403