The value of contrast-enhanced ultrasound in percutaneous biopsy of retroperitoneal masses CONCLUSION: Percutaneous CEUS-guided biopsy is a safe procedure with a high diagnostic yield and a low complication … ← Indicated Stress Prevention Addressing Adolescents with High Stress Levels Based on Principles of Acceptance and Commitment Therapy: A Randomized Controlled Trial The fentanyl-specific antibody FenAb024 can shield against carfentanil effects →