Williams E M, Harper P R
J Med Genet. 1977 Jun;14(3):172-6. doi: 10.1136/jmg.14.3.172.
A South Wales gypsy kindred of Romany origin had a high incidence of phenylketonuria along with other recessively inherited disorders. There was a high degree of consanguinity (F = 0-017) with an excess of non-specific mental subnormality among known consanguineous matings. Phenylketonuria and a number of other recessively inherited disorders have been recorded from other Romany gypsy populations, but it is uncertain whether this results from a generally high gene frequency for the disorders or from consanguinity and other more local factors.
一个起源于罗姆人的南威尔士吉普赛家族中，苯丙酮尿症以及其他隐性遗传疾病的发病率很高。近亲结婚程度很高（F = 0.017），在已知的近亲通婚中，非特异性智力发育迟缓的情况过多。其他罗姆吉普赛人群中也记录到了苯丙酮尿症和一些其他隐性遗传疾病，但尚不确定这是由于这些疾病的基因频率普遍较高，还是由于近亲结婚及其他更局部的因素导致的。
