ATWO - Balen,A.H.; Lumholtz,I.B. - Consensus statement on the bio-safety of urinary-derived gonadotrophins with respect to Creutzfeldt-Jakob disease - Human Reproduction 2005 Nov; 20(11): 2994-9
AAXS - Balen,A.H. - Is there a risk of prion disease after the administration of urinary-derived gonadotrophins? - Human Reproduction 2002 Jul; 17(7): 1676-80
AJXE - Reichl,H.; Balen,A.H.; Jansen,C.A.M. - Prion transmission in blood and urine: what are the implications for recombinant and urinary-derived gonadotrophins? - Human Reproduction 2002 Oct; 17(10): 2501-8
AQQC - Ward,H.J.T.; Balen,A.H.; Will,R.G. - Creutzfeldt-Jakob disease and urinary gonadotrophins - Human Reproduction 2004 May; 19(5): 1236-7