1Division of Cancer Epidemiology and Genetics, DHHS, National Cancer Institute, NIH, 9609 Medical Center Drive, Bethesda, MD, 20892-9761, USA.
2National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China.
3Volpara Health Technologies Ltd, Wellington, New Zealand.
4Institute of Environmental Science and Research, Porirua, GA, 5022, New Zealand.
5Division of Cancer Control and Population Sciences, DHHS, National Cancer Institute, NIH, 9609 Medical Center Drive, Bethesda, MD, 20892-9761, USA.
6Surveillance and Health Equity Science, American Cancer Society, Atlanta, GA, 30303, USA.
7Division of Cancer Epidemiology and Genetics, DHHS, National Cancer Institute, NIH, 9609 Medical Center Drive, Bethesda, MD, 20892-9761, USA. royang@mail.nih.gov.