H T Phillips, A G Beza. Show Affiliations »
Abstract
Mesh: See more » Health SurveysHealth Systems AgenciesHumansTelephoneUnited States
Year: 1979 PMID: 420367 PMCID: PMC1619085 DOI: 10.2105/ajph.69.3.221
Source DB: PubMed Journal: Am J Public Health ISSN: 0090-0036 Impact factor: 9.308