RT Journal Article T1 Impairment Questions and Answers JF Guides Newsletter JO Guides Newsletter YR 1999 DO 10.1001/amaguidesnewsletters.1999.MarApr05 VO 4 IS 2 SP 7 OP 7 SN 2642-0880 RD 3/25/2023 UL https://doi.org/10.1001/amaguidesnewsletters.1999.MarApr05