[1] Texas Childrens Hosp, Dept Pathol, Houston, TX 77030 USA
[2] Baylor Coll Med, Houston, TX 77030 USA
[3] Univ Texas, Hlth Sci Ctr, Dent Branch, Dept Stomatol,Div Oral & Maxillofacial Pathol, Houston, TX 77225 USA
[4] Univ Texas, Hlth Sci Ctr, Dent Branch, Dept Pediat Dent, Houston, TX 77225 USA