Authors: S John; W J Perianayagam; S Muralidharan; V Nandakumar; R Mansfield; S Krishnaswamy; I P Sukumar; G Cherian Journal: Thorax Date: 1981-05 Impact factor: 9.139
Authors: S A M Said; A A H J Thiadens; M J C H Fieren; E J Meijboom; T van der Werf; G B W E Bennink Journal: Neth Heart J Date: 2002-02 Impact factor: 2.380