479
Participants
Start Date
January 31, 2007
Primary Completion Date
May 31, 2013
Study Completion Date
May 31, 2013
Nofer Institute of Occupational Medicine, Department of Environmental Epidemiology, Lodz
Department of Pediatrics and Allergy, Medical University of Lodz, N. Copernicus Hospital, Lodz, Poland, Lodz
Medical University of Lodz
OTHER