In this study, standard hair analysis protocol was violated in several ways, any one of which would be enough to discredit the study.
(standard hair analysis protocol; was violated; ) (any one of which; would be; enough to discredit the study; L:In this study) (any one of which; to discredit; the study)
standard hair analysis protocol any one of which any one of which
was violated would be to discredit
enough to discredit the study L:In this study
the study