方法：对近6年于北京大学人民医院不孕不育门诊进行咨询的1624例患者中，存在染色体异常的患者，进行染色体核型及临床分析。
Methods: Among 1624 patients consulted in infertility clinic in our hospital from recent 6 years, chromosome karyotype and clinical analysis were conducted in abnormal chromosome patients.
然而，在一般的做法不孕的期限可短于不孕不育患者门诊。
However, in general practice the duration of infertility may be shorter than in infertility outpatient clinic patients.
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