TY  - RPRT
TI  - Panic disorder subtypes: differential responses to CO2 challenge.
AU  - B Biber
AU  - T Alkin
PY  - 1999
DO  - 10.1176/ajp.156.5.739
UR  - https://pubmed.ncbi.nlm.nih.gov/10327907/
ID  - 10327907
ER  -