The invention is to methods for identifying asymptomatic patients who have a likelihood of benefiting from administration of an estrogen activity modulator for risk reduction or therapeutic treatment of breast cancer, methods for reducing risk or therapeutically treating these asymptomatic patients, and methods for monitoring the treatments. The recycling procedure is essentially based on selectively wet etching the deposited silicon nitride with respect to the silicon dioxide stabilization layer, preferably with hot phosphoric acid at 160 C. Bent monopoles or other elements may also be utilized. Data may be encoded within multiple facets. A plurality of electrodes are connected to the sensor module and protrude from the flexible substrate for contacting the skin of a subject body.