RT Article T1 Testing methodologies to recruit adult drug-using couples JF Addictive behaviors VO 34 IS 1 SP 96 OP 99 A1 Homish, Gregory G. A2 Leonard, Kenneth E. LA English YR 2009 UL https://krimdok.uni-tuebingen.de/Record/1912722984 DO 10.1016/j.addbeh.2008.08.002