RT Journal A1 Friedman D T1 DNa damage pathways JF JAMA JO JAMA YR 2010 FD October 20 VO 304 IS 15 SP 1645 OP 1645 DO 10.1001/jama.2010.1346 UL http://dx.doi.org/10.1001/jama.2010.1346 AB