Authors: W Vetter; K Záruba; H Armbruster; R Beckerhoff; H Vetter; J Nussberger; U Schmied; G Reck; A Fontana; W Siegenthaler Journal: Klin Wochenschr Date: 1975-08-01
Authors: P Weidmann; R de Chatel; A Schiffmann; E Bachmann; C Beretta-Piccoli; F C Reubi; W H Ziegler; W Vetter Journal: Klin Wochenschr Date: 1977-08-01