PMC:314463 / 20603-20609 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T4673","span":{"begin":0,"end":4},"obj":"CD"},{"id":"T4674","span":{"begin":4,"end":5},"obj":"-RRB-"},{"id":"T4675","span":{"begin":5,"end":6},"obj":"."}],"text":"1981)."}