bɪkˈʌz ðə ɡɹˈuːp tʊ wˌɪtʃ ɐ ɡˈɪvən pˈeɪʃənt ɪz ɐsˈaɪnd ɪz nˈoʊn, kənsˈɛnt kæn biː sˈɔːt kəndˈɪʃənəli.
Because the group to which a given patient is assigned is known, consent can be sought conditionally.