{HEAD ~ Other types} of {TAIL ~ therapy modules} could be used without departing from the scope of this disclosure 
of
{ HEAD ~ Other types } of { TAIL ~ therapy modules } could be used without departing from the scope of this disclosure
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH