Dorota Kaleta*, Przemysław Korytkowski, Teresa Makowiec-Dąbrowska, Bukola Usidame, Leokadia Bąk-Romaniszyn and Adam Fronczak
* Corresponding author: Dorota Kaleta dkaleta@op.pl
BMC Public Health 2012, 12:1020 doi:10.1186/1471-2458-12-1020
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