WITTES JANET 312,870 ANNUAL Fifteenth Annual Meeting of the Society for Clinical Trials The Westin Galleria Hotel, Houston, Texas May 8-11, 1994 / [Janet Wittes chair et al]. - New York i Elsevier Science Inc., 1994. - [4], 153 s. 25 cm (Controlled Clinical Trials, ISSN 0197-2456 ; vol. 15, nr 3S suppl.)