TY  - RPRT
TI  - More potential for sildenafil than potency.
AU  - Felix Mahler
AU  - Iris Baumgartner
PY  - 2005
DO  - 10.1161/circulationaha.105.577643
UR  - https://pubmed.ncbi.nlm.nih.gov/16275879/
ID  - 16275879
ER  -