these findings , which might reflect a disturbance in bone or calcium metabolism in patients with motor neuron disease , are of interest in view of the known ability of divalent ions other than calcium , such as lead and mercury , to simulate motor neuron disease , and the discovery that patients with proven primary and secondary hyperparathyroidism may have features of amyotrophic lateral sclerosis .
C0085084
motor neuron disease
C0002736
amyotrophic