TY - GEN AU - Simeone,R S AU - Rhodes,W M AU - Hunt,D E TI - A plan for estimating the number of "hardcore" drug users in the United States SN - 0020-773X PY - 1995///0929 KW - Bias KW - Crime KW - statistics & numerical data KW - Cross-Sectional Studies KW - Data Collection KW - Humans KW - Illicit Drugs KW - Incidence KW - Models, Statistical KW - Psychotropic Drugs KW - Sampling Studies KW - Substance-Related Disorders KW - epidemiology KW - United States N1 - Publication Type: Journal Article; Research Support, Non-U.S. Gov't UR - https://doi.org/10.3109/10826089509048751 ER -