المؤلفون: Wilson, Duncan, Adams, Matthew E, Robertson, Fergus, Murphy, Mary, Werring, David J

المصدر: BMJ: British Medical Journal, 2015 May . 350

الوصول الحر: https://www.jstor.org/stable/26519990Test

المؤلفون: Marrinan, Elizabeth, Robertson, Fergus, Turner, David

المصدر: BMJ: British Medical Journal,

الوصول الحر: https://www.jstor.org/stable/26963327Test