Methods of screening for cancers or treating cancers or autoimmune disorders are disclosed. The transistor pair can include a first transistor having a first terminal to receive a first input radio frequency voltage and to output a first RF current via a second terminal of the first transistor, and a second transistor having a first terminal to receive a second input RF voltage and to output a second RF current via a second terminal of the second transistor. The visible data and stored encoded data include an identification of a check, account, drawer and bank. The insulation layer is formed between the first conductive layer and the second conductive layer and is formed on the side wall of the via.