S Hayes. Show Affiliations »
Abstract
Entities: Chemical
Keywords: Health Care and Public Health; National Health Service
Mesh: See more » Health Care RationingHumansMalePatient SelectionPhosphodiesterase Inhibitors/supply & distributionPiperazines/supply & distributionPurinesResource AllocationSildenafil CitrateSulfones
Substances: See more » Phosphodiesterase InhibitorsPiperazinesPurinesSulfonesSildenafil Citrate
Year: 1999 PMID: 10364131 PMCID: PMC1115979
Source DB: PubMed Journal: BMJ ISSN: 0959-8138