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fertility × 16obstetrics × 6
sex × 3
reproduction × 3
sperm-count × 3
exercise × 2
sperm × 2
covid-19 × 1
nutrition × 1
medications × 1
vaccination × 1
cancer × 1
side-effects × 1
food-safety × 1
endocrinology × 1
sars-cov-2 × 1
toxicity × 1
oral-health × 1
liver × 1
reference-request × 1
coloration-discoloration × 1
penis × 1
contraception × 1
heat × 1
self-healing-repairing × 1