Authors: T Bjerkedal; A Czeizel; J Goujard; B Kallen; P Mastroiacova; N Nevin; G Oakley; E Robert Journal: Lancet Date: 1982-11-13 Impact factor: 79.321
Authors: B Källén; E E Castilla; P A Lancaster; O Mutchinick; L B Knudsen; M L Martínez-Frías; P Mastroiacovo; E Robert Journal: J Med Genet Date: 1992-01 Impact factor: 6.318