Topical administration is generally preferred for skin related diseases, and {HEAD ~ systematic treatment} preferred for {TAIL ~ cancerous or pre cancerous conditions}, although other modes of delivery are contemplated 
preferred for
Topical administration is generally preferred for skin related diseases , and { HEAD ~ systematic treatment } preferred for { TAIL ~ cancerous or pre cancerous conditions } , although other modes of delivery are contemplated
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH