| 600 / | HD | SURGERY |
| 300 | DF | DIAGNOSTIC TESTING {38} |
| 529 | DF | .~ Respiratory {8} |
| 534 | ![]() | .~.~ Detecting body movement attending breathing {2} |
| 535 | DF | .~.~.~> Capacitor-type transducer |
| 536 | DF | .~.~.~> Detector responsive to movement induced variation in impedance of body to electric current |