CORD-19:1fe201bcf1ed66856f693846cb0d07ce48051ec1 / 132-166 JSONTXT

{"project":"CORD-PICO","denotations":[{"id":"p1_all0","span":{"begin":0,"end":34},"obj":"Intervention"},{"id":"p2_i0","span":{"begin":0,"end":34},"obj":"Physical"}],"text":"carbon black nanoparticle exposure"}