RT Article T1 Comparing injection and non-injection routes of administration for heroin, methamphetamine, and cocaine users in the United States comparing injection and non-injection routes of administration for heroin, methamphetamine, and cocaine users in the United States JF Journal of addictive diseases VO 30 IS 3 SP 248 OP 257 A1 Novak, Scott P. A2 Kral, Alex H. LA English YR 2011 UL https://krimdok.uni-tuebingen.de/Record/1912486679 DO 10.1080/10550887.2011.581989