{HEAD ~ Recommended treatments} are based on {TAIL ~ the specific condition} and medical history of the injured party as well as, at least in part, historical treatment statistics, expert advice, and on appropriate clinical trials 
are based on
{ HEAD ~ Recommended treatments } are based on { TAIL ~ the specific condition } and medical history of the injured party as well as , at least in part , historical treatment statistics , expert advice , and on appropriate clinical trials
HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH