I too read that as a Call for Further Testing, and given the other tests, at least moving forward with using a likely safer coating based on the other tests. I

I too read that as a Call for Further Testing, and given the other tests, at least moving forward with using a likely safer coating based on the other tests. It isn't unfathomable for a single study, pro or negative, to uncover a previously unconsidered test variable or other complication and it is entirely indicative that a followup study which has a larger sample size and better controls needs to be conducted to obtain more solid evidence.