Authors: C R Newton; L E Heptinstall; C Summers; M Super; M Schwarz; R Anwar; A Graham; J C Smith; A F Markham Journal: Lancet Date: 1989 Dec 23-30 Impact factor: 79.321
Authors: J R Riordan; J M Rommens; B Kerem; N Alon; R Rozmahel; Z Grzelczak; J Zielenski; S Lok; N Plavsic; J L Chou Journal: Science Date: 1989-09-08 Impact factor: 47.728