# of Articles

Source

61

Autism Genetic Studies (Web-based collection)

3

Biological Abstracts

41

BIOSIS Previews

42

Cumulated Index Medicus

374

EMBASE

13

Excerpta Medica

521

MEDLINE

7

National Autism Society’s Titles in Autism

12

National Library of Medicine’s Current Catalog

80

PsycINFO

85

PsycLIT

9

Psychological Abstracts

8

Source in Hand (or Personal Library)

1

Wilson’s General Science Index

2

World Wide Web

1,259

Total Source Articles