def METHOD_NAME(jid):
    element = journaltable.get(jid)
    issn = element.find("issn").text
    eissn = element.find("eissn").text
    issns = []
    if issn is not None: issns.append(issn)
    if eissn is not None: issns.append(eissn)
    cell = ", ".join(issns)
    return cell