Clinical Safety of Pudilan Xiaoyan Oral Liquid for the Treatment of Upper Respiratory Tract Infection in the Real World: Protocol for a Prospective, Observational, Registry Study

Mengmeng Wang   ^{1 *} , MMSc ;   Lianxin Wang   ^{1 *} , MD ;   Fumei Liu   ^{1 *} , MMSc ;   Renbo Chen   ^{1 *} , MD ;   Zhifei Wang   ¹ , MD ;   Xin Cui   ¹ , MD ;   Yuanyuan Li   ¹ , MD ;   Yanming Xie   ¹ , MBBS

¹ Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, China

*these authors contributed equally