PT - JOURNAL ARTICLE AU - COHEN, BERNARD L. TI - Radon Risk and EPA AID - 10.1126/science.251.4995.726-b DP - 1991 Feb 15 TA - Science PG - 726--726 VI - 251 IP - 4995 4099 - http://science.sciencemag.org/content/251/4995/726.3.short 4100 - http://science.sciencemag.org/content/251/4995/726.3.full SO - Science1991 Feb 15; 251