[Studies on male infertility: 6. Clinical observation on male infertility].
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D000367:Age Factors; D001208:Asia; D003710:Demography; D003906:Developing Countries; D004812:Epidemiologic Methods; D005202:Asia, Eastern; D015994:Incidence; D007246:Infertility; D007723:Korea; D008571:Men; D011153:Population; D011154:Population Characteristics; D012098:Reproduction; D012106:Research; D012107:Research Design
Age Factors; Asia; Demographic Factors; Developing Countries; Eastern Asia; Epidemiologic Methods; Incidence; Infertility--etiology; Korea; Korea, Republic Of; Measurement; Men; Population; Population Characteristics; Reproduction; Research Methodology