Author response for 'Insight into the oxidase-mimicking activity enhancement of MnO2 nanozymes by Co ion-doping for colorimetric sensor assays' - null Thi-Hien Pham; null Xuan-Dinh Ngo; null Nguyen Van Tuyen; null Chu Xuan Quang; null Pham-Cong De; null Tan Van Tran; null Nguyen Pham Duy Linh; null Van-Tuan Hoang; null Anh-Tuan Le (2025)