International Observer

Arch G. Mainous, Richard Baker, Azeem Majeed, Richelle J. Koopman, Charles J. Everett, Sonia Saxena, Barbara C. Tilley
2006 Public health reports (1974)  
doi:10.1177/003335490612100317 pmid:16640158 pmcid:PMC1525281 fatcat:3go5j3ghr5c7nejabpnwa4x56m