| UCD | urine collection device; usual childhood diseases |
|---|---|
| UCHD | usual childhood diseases |
| UDC | usual diseases of childhood |
| USAMRIID | United States Army Medical Research Institute for Infectious Diseases |
| ECG | Electro-Cardio-Graphy(-Gram); 심전도 = EKG 1. Conducting System Structu... |