Authors: J G Cleland; H J Dargie; G P Hodsman; S G Ball; J I Robertson; J J Morton; B W East; I Robertson; G D Murray; G Gillen Journal: Br Heart J Date: 1984-11
Authors: G J Wenting; A J Man in't veld; A J Woittiez; F Boomsma; K Laird-Meeter; M L Simoons; P G Hugenholtz; M A Schalekamp Journal: Br Heart J Date: 1983-01