Respiratory Effects of Amyotrophic Lateral Sclerosis: Problems and Solutions
https://rc.rcjournal.com/content/51/8/871.short

The 'internet' is giving me very hard time getting these simple journal paper references and narrow comments posted . . .

Two other journal papers ought be mentioned:

DiPALS (Sheffield) {free}
Just a moment...

RespiStimALS (Paris) {maybe $49, is available in some medical libraries}
Just a moment...