Authors: Elena Zvaritch; Natasha Kraeva; Eric Bombardier; Robert A McCloy; Frederic Depreux; Douglas Holmyard; Alexander Kraev; Christine E Seidman; J G Seidman; A Russell Tupling; David H MacLennan Journal: Proc Natl Acad Sci U S A Date: 2009-12-03 Impact factor: 11.205