1. Columbia Center for Children’s Environmental Health, Mailman School of Public Health, Columbia University, New York, New York, USA
2. Department of Epidemiology and Preventive Medicine, Jagiellonian University, Krakow, Poland
3. Polish-American Institute of Pediatrics, Jagiellonian University, Krakow, Poland
4. Department of Analytical and Environmental Chemistry, Southwest Research Institute, San Antonio, Texas, USA
5. Department of Biostatistics and
6. Department of Population and Family Health, Mailman School of Public Health, Columbia University, New York, New York, USA