Lancet : a journal of British and foreign medicine, surgery, obstetrics, fysiology, chemistry, pharmacology, public health and news Zv. 4: Vol. 351 no. 9107-9111 1998. The Lancet London : Lancet. s. 921-1296ISSN 0140-6736   [1, z toho volných 0, prezenčně 1]