1 Environment and Lifestyle Epidemiology Branch, International Agency for Research on Cancer, Lyon 69008, France. Electronic address: mccormackv@iarc.fr.
2 Environment and Lifestyle Epidemiology Branch, International Agency for Research on Cancer, Lyon 69008, France.
3 Kilimanjaro Clinical Research Institute, Moshi, Tanzania; Kilimanjaro Christian Medical Centre, Moshi, Tanzania; Kilimanjaro Christian Medical University College, Moshi, Tanzania.
4 School of Public Heath, Moi University, Eldoret, Kenya.
5 Malawi College of Medicine, Blantyre, Malawi.
6 Queen Elizabeth Central Hospital, Blantyre, Malawi.