Complex sentence: Coroners have expressed concerns about WCA procedures in a small number of inquests and there is evidence, disputed by the DWP, that the WCA has been a contributing factor in hundreds--possibly thousands--of deaths.
Split into simpler sentences: Coroners have expressed concerns about WCA procedures in a small number of inquests. There is evidence, disputed by the DWP, that the WCA has been a contributing factor in hundreds--possibly thousands--of deaths.