TERMS OF REFERENCE FOR ENGAGEMENT OF A

Estimates of the prevalence of ASD using the DSM-III, DSM-IIIR DSM-IV or ICD-10 diagnostic classification systems, from published synthesised literature up to April 2004 varied between 3 and 82 per 10,000 (Williams & Brayne 2006) and from 2000–07 between 16 and 181 per 10,000 (Fombonne 2009) and are still subject to change. ................
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