The one-hour event included individual skin exams for 13 teachers and staff members. Dr. Plott volunteered his time as a free service through the American Academy of Dermatology.Keller, Texas (PRWEB) December 26, 2011 Dr. R. Todd Plott of Dermatology Alliance-Keller, held a skin cancer awareness seminar December 13 at Trinity Springs Middle School. The one-hour event included individual skin ...