New England Journal of Medicine (1989) - Comment
pubmed: 2566117  doi: 10.1056/nejm198906013202203  issn: 0028-4793  issn: 1533-4406 

---

Baden Rumble, Robert Retallack, Caroline Hilbich, Gail Simms, Gerd Multhaup, Ralph Martins, Athel Hockey, Philip Montgomery, Konrad Beyreuther, Colin L. Masters