a total of 23 patients with motor neuron disease ( mnd ) , encompassing 17 cases of amyotrophic lateral sclerosis , 4 of progressive muscular atrophy and 2 of progressive bulbar palsy , was diagnosed in benghazi , north-eastern libya , between 1980 and 1985 .
C0085084
motor neuron disease
C0030442
progressive bulbar palsy