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. 2016 Jan 29;6:19544. doi: 10.1038/srep19544

Table 8. Percentage of participants with completed information in the Phelan-McDermid Syndrome Foundation Registry.

Deletion Size and Position 53% (27/51)
Autism Symptoms Questionnaire 61% (31/51)
Regression Questionnaire 59% (30/51)
Medical Questionnaire 61% (31/51)
Behavioral Questionnaire 61% (31/51)
Sleep Questionnaire 59% (30/51)
Alternative Medications and Treatments 63% (32/51)