PT - JOURNAL ARTICLE AU - Ruano-Ravina, Alberto AU - Kelsey, Karl T. AU - Fernández-Villar, Alberto AU - Barros-Dios, Juan M. TI - Action levels for indoor radon: different risks for the same lung carcinogen? AID - 10.1183/13993003.01609-2017 DP - 2017 Nov 01 TA - European Respiratory Journal PG - 1701609 VI - 50 IP - 5 4099 - http://erj.ersjournals.com/content/50/5/1701609.short 4100 - http://erj.ersjournals.com/content/50/5/1701609.full SO - Eur Respir J2017 Nov 01; 50