PT - JOURNAL ARTICLE AU - Zeiger, M TI - Towards clearer writing DP - 1993 Apr 01 TA - European Respiratory Journal PG - 457--460 VI - 6 IP - 4 4099 - http://erj.ersjournals.com/content/6/4/457.short 4100 - http://erj.ersjournals.com/content/6/4/457.full SO - Eur Respir J1993 Apr 01; 6