00541naa#a2200157#i#4500001002800000005001700028100004100045102000700086200011900093210003600212215001000248608003700258700003700295700003300332856001800365EN\AUS PUBLISHERS\bibl\575620241122132837.5##a20211202b2021####ek#y0engy0150####ca##aRU1#aTHE IMPACT OF THE COVID-19 PANDEMIC ON THE RISK OF  CLINICAL TRIAL PROTOCOLS AMENDMENTSeConference article/thesis1#aMelbournecAUS PUBLISHERSd2021##a3 с.##aConference article/thesis2local#1aEleskinagAnastasia Alexandrovna#1aFilippovagOlga Vsevolodovna4#aw-science.com