Challenge of identifying Flight 17 victims

(CNN) – By now, 198 coffins carrying remains from the crash of Malaysia Airlines Flight 17 are either in the Netherlands, or on the way there.

For many of the victims in those coffins, they are finally back in their homeland, because so many aboard the plane were Dutch citizens.

A team of 75 investigators from the Netherlands, France, Malaysia, and Australia – all countries who had citizens aboard the flight – will have the task of combing through the remains to try and match what is left to a name. They will use dental records, fingerprints, and DNA testing, which is considered the gold standard.

But as CNN's Dr. Sanjay Gupta reports, it is a science, but not a perfect science.