Lancet : a journal of British and foreign medicine, surgery, obstetrics, fysiology, chemistry, pharmacology, public health and news Zv. 5: Vol. 350 no. 9086-9089 1997. The Lancet London : Lancet. s. 1187-1488ISSN 0140-6736   [1, z toho volných 0, prezenčně 1]