Authors: Teresa R Gray; Linda L LaGasse; Lynne M Smith; Chris Derauf; Penny Grant; Rizwan Shah; Amelia M Arria; Sheri A Della Grotta; Arthur Strauss; William F Haning; Barry M Lester; Marilyn A Huestis Journal: Ther Drug Monit Date: 2009-12 Impact factor: 3.681