1 Mercator Research Institute on Global Commons and Climate Change, Berlin, Germany; Priestely International Centre for Climate, School of Earth and Environment, University of Leeds, Leeds, UK.
2 Stockholm Environment Institute, Stockholm 115 23, Sweden; Africa Centre for Evidence, University of Johannesburg, Johannesburg, South Africa. Electronic address: neal.haddaway@sei.org.
3 Department of Global Health, University of Washington, Seattle, WA, USA.