May-Jean King (2000-07-04). “2: ABO Polymorphisms and their putative biological relationships with disease”. Human Blood Cells (Consequences of Genetic Polymorphisms and Variations). World Scientific Pub Co Inc. p. 44. doi:10.1142/9781848160309_0002. ISBN978-1860941962. "As it is not possible to comparatively re-interpret all of the published data, we have tried to present this data with a reasonably "open mind", so that you may "find your own truth". However, it must be stated that an "open mind" should not extend to some of the non-scientific literature where there are books on the ABO system of pure fantasy. 206 The most recent and incredulous of these claims that individuals of each ABO blood type must subscribe to a specific diet in order to stay healthy, live longer and achieve an ideal weight!"
Mattos, Luiz C. de; Moreira, Haroldo W. (2004). “Genetic of the ABO blood system and its link with the immune system”. Revista Brasileira de Hematologia e Hemoterapia26. doi:10.1590/S1516-84842004000100012.
