| Recruiting | N/A | 100 | RoW | Low-level tragus stimulation, Sham stimulation | The First Affiliated Hospital with Nanjing Medical University, University of Oklahoma, The Affiliated Hospital of Xuzhou Medical University, Wuxi No. 2 People's Hospital, The First People's Hospital of Changzhou, Second Affiliated Hospital of Nantong University, Affiliated Hospital of Nantong University, Jiangsu Province Official Hospital, The First Affiliated Hospital of Wannan Medical Colledge, Jiangsu Taizhou People's Hospital | Premature Ventricular Contraction | 12/22 | 12/22 | | |
| Recruiting | N/A | 10000 | RoW | Installation or registration of smartphone application | Chinese Alliance Against Lung Cancer | Solitary Pulmonary Nodule | 10/25 | 10/25 | | |