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cooling–rewarming observed using polarized light microscopy. Human Reproduction, 16: 2374–2378. World Health Organization (1999) WHO Laboratory Manual for the Examination of Human Semen and Sperm–Cervical Mucus Interaction, 4th Edition. Cambridge, UK, Cambridge University Press. Wikland, M. and Sjoblom, C. (2000) The application of quality systems in ART programs. Molecular and Cellular Endocrinology, 166: 3–7.