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2. Navigating Rough Waters: An Overview of Psychological Aspects of Surrogacy' (2005) 61 Journal of Social Issues 21, 30 in which surrogates stated they would not have become a surrogate simply for the money, as it is 'never enough' and another woman echoing;H Ragone ; 57;Surrogate Motherhood: Conception in the Heart,1994
3. Clinical and immunologic aspects of egg donation pregnancies: a systematic review;M L P Van Der Hoorn;Human Reproduction Update,0704