TY  - RPRT
TI  - Sampling hard to reach populations.
AU  - J Faugier
AU  - M Sargeant
PY  - 1997
DO  - 10.1046/j.1365-2648.1997.00371.x
UR  - https://pubmed.ncbi.nlm.nih.gov/9354993/
ID  - 9354993
ER  -