%0 Journal Article
%T Extensions of Respondent-Driven Sampling: A New Approach to the Study of Injection Drug Users Aged 18–25
%A Heckathorn, Douglas
%A Semaan, Salaam
%A Broadhead, Robert
%A Hughes, James
%J AIDS and Behavior
%V 6
%N 1
%P 55-67
%@ 1090-7165
%D 2004-10-10
%I Kluwer Academic Publishers-Plenum Publishers
%~ DeepDyve