298,984 WORLD XIX World Congress of the International Society for Cardiovascular Surgery : September 5-9, 1989, Toronto, Ontario (Canada) : abstracts. - [Torino : Minerva Medica, 1989]. - [14], 158, [2] s. : il. ; 28 cm (The Journal of Cardiovascular Surgery, ISSN 0021- -9509 ; vol. 30, nr 5, suppl.)