The present invention provides compounds, pharmaceutically acceptable compositions thereof, and methods of using the same. The ROM section comprises a password area for holding passwords and a personal information area for holding personal information. The wash composition includes one or more surfactants selected from the group consisting of non-ionic, cationic, amphoteric or zwitterionic surfactants, and optionally, an anionic surfactant. The module may be connected via a communications link to a remote control center. The comparator, the integrator and the flip-flop are connected in a negative feedback loop such that at steady state the voltage developed by the integrator at the second input of the comparator is substantially equal to the reference voltage. A jelly-like member, which transmits ultrasound waves, is filled in around the internal organ models.