We are proud to announce our new Scientific Advisory Board Members, Dr. Oliver Zivanovic and Andrea Mattocks. Dr. Oliver Zivanovic s a gynecologic oncology surgeon specializing in the diagnosis and treatment of cancers of the uterus, cervix, ovary, and vulva. Read More. Andrea Mattocks is the ®T.E.A.L. Scientific Advisory Board Administrator. She has a master’s in public health with a focus in epidemiology at the Mailman School of Public Health at Columbia University. Read More.