672
The IQ of PAH - deficient mothers with a severe PKU mutation in combination with a MHP mutation or a mild PKU mutation was 99 and 96 , respectively , whereas the IQ of PKU mothers with two severe PKU mutations or with one severe and one moderate PKU mutation was 83 and 84 , respectively .
 PAH - deficient, PKU, MHP, PKU, PKU, PKU, PKU
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease 
Text: {0} 
Answer:
 PAH - deficient, PKU, MHP, PKU, PKU, PKU, PKU