Authors: A Leentvaar-Kuijpers; M M Dekker; R A Coutinho; E E Dekker; J N Keeman; M C Ansink-Schipper Journal: Lancet Date: 1990-03-03 Impact factor: 79.321
Authors: C Ciesielski; D Marianos; C Y Ou; R Dumbaugh; J Witte; R Berkelman; B Gooch; G Myers; C C Luo; G Schochetman Journal: Ann Intern Med Date: 1992-05-15 Impact factor: 25.391