The article amendments section includes two corrigenda and one erratum: 1. **Corrigendum**: - **Original Citation**: *J. Clin. Invest.* 114:5–14 (2004). doi:10.1172/JCI200422353. - **Citation for this corrigendum**: *J. Clin. Invest.* 114:598 (2004). doi:10.1172/JCI200422353C1. - **Error**: Reference 77 contains an error. The correct reference is provided. 2. **Erratum**: - **Original Citation**: *J. Clin. Invest.* 113:1456–1464 (2004). doi:10.1172/JCI200420864. - **Citation for this erratum**: *J. Clin. Invest.* 114:598 (2004). doi:10.1172/JCI200420864E1. - **Error**: An error was introduced in the Results section of the manuscript. The correct sentence is provided. 3. **Erratum**: - **Original Citation**: *J. Clin. Invest.* 114:280–290 (2004). doi:10.1172/JCI200421583. - **Citation for this erratum**: *J. Clin. Invest.* 114:599 (2004). doi:10.1172/JCI200421583E1. - **Error**: An error was introduced in the panel labels of Figure 1. The correct figure is provided.The article amendments section includes two corrigenda and one erratum: 1. **Corrigendum**: - **Original Citation**: *J. Clin. Invest.* 114:5–14 (2004). doi:10.1172/JCI200422353. - **Citation for this corrigendum**: *J. Clin. Invest.* 114:598 (2004). doi:10.1172/JCI200422353C1. - **Error**: Reference 77 contains an error. The correct reference is provided. 2. **Erratum**: - **Original Citation**: *J. Clin. Invest.* 113:1456–1464 (2004). doi:10.1172/JCI200420864. - **Citation for this erratum**: *J. Clin. Invest.* 114:598 (2004). doi:10.1172/JCI200420864E1. - **Error**: An error was introduced in the Results section of the manuscript. The correct sentence is provided. 3. **Erratum**: - **Original Citation**: *J. Clin. Invest.* 114:280–290 (2004). doi:10.1172/JCI200421583. - **Citation for this erratum**: *J. Clin. Invest.* 114:599 (2004). doi:10.1172/JCI200421583E1. - **Error**: An error was introduced in the panel labels of Figure 1. The correct figure is provided.