Author contributions
EVC and BC designed the study, analysed the data and led the writing. EVC and BC coordinated the research, with help from DH, MB, MMG and RT. AG, AGH, AMD, A. Prinzing, CB, DH, DLM, GL, IVH, JD, JH, JK, KS, LB, M. Branco, MC, MCB, M. Bogdziewicz, M. Ferrante, MMG, MVK, PFC, RLT, RW, SG and XM collected data and gave critical comments on the manuscript; and AM, AP, AVS, DL, GC, JMP, M. Faticov, MLD, MT, NAM, SM and YK contributed data.