[1] Univ Calif San Francisco, Sch Med, San Francisco, CA 94143 USA
[2] Univ Calif San Francisco, Dept Neuroradiol, San Francisco, CA 94143 USA
[3] Med Coll Wisconsin, Milwaukee, WI 53226 USA
[4] Med Coll Wisconsin, Dept Dermatol, Milwaukee, WI 53226 USA
[5] Med Coll Wisconsin, Dept Pediat, Milwaukee, WI 53226 USA
[6] Baylor Coll Med, Dept Pediat, Houston, TX 77030 USA
[7] Baylor Coll Med, Dept Neurol, Houston, TX 77030 USA
[8] Baylor Coll Med, Dept Dermatol, Houston, TX 77030 USA
[9] Univ Calif San Francisco, Dept Pediat, San Francisco, CA 94143 USA
[10] Univ Calif San Francisco, Dept Dermatol, San Francisco, CA 94143 USA
[11] Univ Calif San Francisco, Dept Neurol, San Francisco, CA 94143 USA