document.write("<div class=\"prevBox\"><div class=\"prevBtn\"></div><p><a href=\"/story?sid=66696\">人工角膜帮助盲人恢复视力</a></p></div>");document.write("<div class=\"nextBox\"><div class=\"nextBtn\"></div><p><a href=\"/story?sid=66698\">中国批准基因编辑疗法的临床试验</a></p></div>");