Authors: Joseph R McConnell; Nathan J Chellman; Andrew I Wilson; Andreas Stohl; Monica M Arienzo; Sabine Eckhardt; Diedrich Fritzsche; Sepp Kipfstuhl; Thomas Opel; Philip F Place; Jørgen Peder Steffensen Journal: Proc Natl Acad Sci U S A Date: 2019-07-08 Impact factor: 11.205