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德国医学教授汉斯·里德尔认为,在原因不明的男性不育者中,倘若能把自己的牙病治好,其中的50%可使妻子怀孕。里德尔认为,引起牙病和口腔炎症的病菌多种多样,细菌及其毒
According to Hans Riddle, a professor of German medicine, 50% of infertile men with unknown causes can get their wives pregnant if they can cure their dental problems. Riddle argues that the bacteria that cause dental and oral inflammation are bacteria and their toxins