p. 210-220; Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2012-05-16T17:57:25Z No. of bitstreams: 1 journal.pmed.1000031.pdf: 387770 bytes, checksum: 1ee79c6241153c8c2079617ec99bf606 (MD5); Made available in DSpace on 2012-05-16T17:57:25Z (GMT). No. of bitstreams: 1 journal.pmed.1000031.pdf: 387770 bytes, checksum: 1ee79c6241153c8c2079617ec99bf606 (MD5) Previous issue date: 2009; Background Detec...