public function importAuthors($oldArticleId, $article)
    {
        $this->consoleOutput->writeln("Reading authors...");

        $authorSql = "SELECT first_name, last_name, email, seq FROM authors " .
            "WHERE submission_id = :id ORDER BY first_name, last_name, email";
        $authorStatement = $this->dbalConnection->prepare($authorSql);
        $authorStatement->bindValue('id', $oldArticleId);
        $authorStatement->execute();

        $authors = $authorStatement->fetchAll();
        foreach ($authors as $pkpAuthor) {
            $author = new Author();
            $author->setCurrentLocale('en');
            $author->setFirstName(!empty($pkpAuthor['first_name']) ? $pkpAuthor['first_name'] : '-');
            $author->setLastName(!empty($pkpAuthor['last_name']) ? $pkpAuthor['last_name'] : '-');
            $author->setEmail(
                !empty($pkpAuthor['email']) && $pkpAuthor['email'] !== '-' ?
                    $pkpAuthor['email'] :
                    'author@example.com'
            );

            $articleAuthor = new ArticleAuthor();
            $articleAuthor->setAuthor($author);
            $articleAuthor->setArticle($article);
            $articleAuthor->setAuthorOrder(!empty($pkpAuthor['seq']) ? $pkpAuthor['seq'] : 0);
        }
    }