TY  - RPRT
TI  - Frequency doubling technology staging system 2.
AU  - Paolo Brusini
PY  - 2006
DO  - 10.1097/01.ijg.0000212234.88416.f4
UR  - https://pubmed.ncbi.nlm.nih.gov/16865009/
ID  - 16865009
ER  -