primary lesion primary level primary light primary link primary location primary lymphedema primary machine primary male primary mandate primary markets primary market primary master primary materials primary material primary means primary measures primary measure primary mechanism primary medical primary medium primary memory primary message primary metabolite primary metal primary methods primary method primary midwayers primary mirror primary mission primary mode primary monitor primary motivation primary motive primary motor primary name primary navigation primary needs primary need primary network primary node primary number primary objective of the european union primary objective of the project primary objectives primary objective primary object primary obligation primary obstacle primary occupation primary oil primary one primary operations primary organ primary osteoporosis primary outcome primary owner primary packaging primary particles primary partitions primary partition primary partner primary part primary path primary perpetrators primary phase primary phone primary photo primary place primary platform primary point of contact primary point primary port primary position primary power primary prevention primary principle primary priority primary problem primary processing primary processors primary process primary producers primary production primary productivity primary products primary product primary protocol primary provider primary pulmonary hypertension primary pump primary purposes primary purpose primary qualification primary question primary radar primary raw materials primary reaction primary reasons primary reason primary reference primary relationship primary representative primary requirements primary requirement primary research primary residence primary resources primary resource primary response primary responsibility lies primary responsibility primary right primary risk primary role primary route primary rule primary school age primary school education primary school pupils primary school students primary school teacher primary school to university primary schooling primary schools primary school to primary school primary screening primary screen primary search primary section primary sector primary sense primary sensor primary series primary server primary services primary side primary signal primary significance primary signs primary site primary skills primary solution primary songwriter primary source of energy primary source of financing primary source of food primary source of income primary source of information primary sources primary source primary species primary sponsor primary stability primary stage primary star primary state primary step primary storage primary strategy primary structure primary students primary studies primary subject primary substance primary supernaphim primary supplier primary support primary surgery primary surpluses primary surplus primary suspect primary symptoms primary symptom primary syphilis primary systems primary system primary tank primary targets primary target primary task primary teachers primary teacher primary teaching primary teeth primary tenant primary text primary theme primary therapy primary thing primary threat primary tool primary training primary treatment primary trend primary tumor primary tumour primary types primary unit primary users