Merenstein SA, Shyu V, Sobesky WE, Staley L, Berry-Kravis E, Nelson DL, Lugenbeel KA, Taylor AK, Pennington BF, Hagerman RJ. Fragile X syndrome in a normal IQ male with learning and emotional problems. J Am Acad Child Adolesc Psychiatry. 1994 Nov-Dec; 33(9):1316-21.