Chiang, S.-C.S.-C.ChiangChen, C.-Y.C.-Y.ChenChang, Y.-Y.Y.-Y.ChangSun, H.-J.H.-J.SunChen, W.J.W.J.Chen2010-10-042018-06-292010-10-042018-06-292007-10http://ntur.lib.ntu.edu.tw//handle/246246/210359en-USPrevalence of heroin and methamphetamine male users in the northern Taiwan, 1999-2002: capture-recapture estimatesjournal article