Authors: Külliki Saar; Andrey M Mazarati; Riina Mahlapuu; Gerd Hallnemo; Ursel Soomets; Kalle Kilk; Sven Hellberg; Margus Pooga; Bo-Ragnar Tolf; Tiejun S Shi; Tomas Hökfelt; Claude Wasterlain; Tamas Bartfai; Ulo Langel Journal: Proc Natl Acad Sci U S A Date: 2002-05-14 Impact factor: 11.205