In this case , the absence of detectable airborne adenovirus DNA <*> removed the requirement for staff to wear surgical masks and face visors
using a conventional diagnostic assay
In this case , the absence of detectable airborne adenovirus DNA using a conventional diagnostic assay removed the requirement for staff to wear surgical masks and face visors when they entered the child 's room .
In this case , the absence of detectable airborne adenovirus DNA using a conventional diagnostic assay removed the requirement for staff to wear surgical masks and face visors when they entered the child 's room .