@nullify<EOL>def author_contributions(soup, fntype_filter):
author_contributions_section = extract_nodes(soup, "<STR_LIT>", attr="<STR_LIT>", value="<STR_LIT>")<EOL>if not author_contributions_section:<EOL><INDENT>return None<EOL><DEDENT>fn = extract_nodes(first(author_contributions_section), "<STR_LIT>")<EOL>cons = footnotes(fn, fntype_filter)<EOL>return cons<EOL>
Find the fn tags included in the competing interest