Titlebook: Social Infrastructure Maintenance Notebook; Atsushi Yashima,Yu Huang Book 2021 The Editor(s) (if applicable) and The Author(s), under excl

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Atsushi Yashima,Yu Huangand both male and female infertility has been suggested. Infertility affects 10–15 % of couples attempting to conceive, and a male factor is identifiable in 40–60 % of couples seeking infertility treatments. Despite extensive research, it is still not well known which maternal and especially paterna

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Atsushi Yashima,Yu Huangally occurs on the left side. The incidence of varicocele is almost as high as 15 % in the general population afflicting up to 35 % of men with primary infertility and 81 % of men with secondary infertility. Although other studies have found an equal incidence of varicocele among both primary and se

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Atsushi Yashima,Yu Huangory microscopic test, the scope of endocrine and hormone tests was limited and debate about the relevance of a varicocele was only just beginning. Since then, progress has owed about as much to sociological change as medical progress. Acceptance that problems of fertility should be shared between pa

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