I found an article that he wrote in a medical journal. Where he just goes... on, and on, and on about how... breath capture would save millions of lives. There's just no proof that he ever actually did it.
Zure idazlan bat aurkitu nuen sendagintza aldizkari batean non sarri esaten duzun arnasaren hartzaileak miloika bizitza salbatuko lituzkeela, baina ez dago egiaztapenik.