[Biophysical foundation of antifertility by physical agents].
Lu
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CX
D001208:Asia; D002681:China; D003267:Contraception; D003906:Developing Countries; D003933:Diagnosis; D004467:Economics; D005193:Family Planning Services; D005202:Asia, Eastern; D010808:Physical Examination; D012106:Research; D013672:Technology; D014465:Ultrasonics
Asia; China; Contraception; Developing Countries; Eastern Asia; Economic Factors; Examinations And Diagnoses; Family Planning; Physical Examinations And Diagnoses; Research And Development; Technology; Ultrasonics--side effects