1. Department of Research, Cancer Registry of Norway, Oslo, Norway
2. Section for Colorectal Cancer Screening, Cancer Registry of Norway, Oslo, Norway
3. Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
4. Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
5. Seaver Autism Center for Research and Treatment at Mount Sinai, New York, NY, USA
6. International Agency for Research on Cancer, Lyon, France