RT Journal Article SR Electronic T1 The optimal treatment of stage I nonsmall cell lung cancer in the era of SABR and modern day lung resections JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 2002595 DO 10.1183/13993003.02595-2020 VO 56 IS 5 A1 Eric Vallieres YR 2020 UL http://erj.ersjournals.com/content/56/5/2002595.abstract AB