TY  - RPRT
TI  - More research is needed.
AU  - G Maldonado
AU  - C Poole
PY  - 1999
DO  - 10.1016/s1047-2797(98)00050-7
UR  - https://pubmed.ncbi.nlm.nih.gov/9915604/
ID  - 9915604
ER  -