Response to Letter to the editor: Lung Ultrasound in COVID-19 Patients – More Shadows Than Information – Letter to the Editor on the Article “W. LU et al. Ultraschall in Med. 2020 Apr 15” - Wuzhu, Lu; Shushan, Zhang; Binghui, Chen; Jiaxin, Chen; Jianzhong, Xian; Yuhong, Lin; Hong, Shan; Zhong Zhen, Su (Ultraschall in der Medizin - European Journal of Ultrasound, 2020)