1. School of Social and Community Medicine, University of Bristol, Bristol, UK (PG, AED, NJW)
2. Mapi, Houten, the Netherlands (PG)
3. Bristol Haematology and Oncology Centre, Bristol, UK (MB)
4. Gustave Roussy, Université Paris-Saclay, Service de biostatistique et d’épidémiologie / Ligue Nationale Contre le Cancer meta-analysis plateform, F-94805 Villejuif, France (BL, JP)
5. Université Paris-Saclay, Univ. Paris-Sud, UVSQ, CESP, INSERM, F-94085 Villejuif, France (BL, JP)