NCT04295109 2020-04-24
Comparison of the Effects of Fentanyl, Oxycodone, Butorphanol on Gastrointestinal Function
The First Affiliated Hospital with Nanjing Medical University
Phase NA Unknown
The First Affiliated Hospital with Nanjing Medical University
Southern Medical University, China
Peking Union Medical College Hospital
University Magna Graecia
National Health Insurance Service Ilsan Hospital