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Reply to the Letter to the Editor “Controlling for Ascertainment Bias May Introduce Control Group Bias in Prospective Nonrandomized Trials”

Gao, Zhidong MD; Wang, Chao MD; Zhan, Siyan PhD; Tao, Zhuang PhD; Wang, Shan MD, PhD; Ye, Yingjiang MD, PhD

doi: 10.1097/SLA.0000000000003152
Response to the Letter: PDF Only
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Department of Gastrointestinal Surgery, Peking University People's Hospital, Beijing, China

Key Laboratory of Colorectal Cancer Diagnosis and Treatment Research, Beijing, China

Department of Gastrointestinal Surgery, Peking University People's Hospital, Beijing, China

Laboratory of Surgical Oncology, Peking University People's Hospital, Beijing, China

Department of Epidemiology, Peking University Health Science Center, Beijing, China

Beijing Medical Development Clinical Research Institute, Beijing, China

Department of Gastrointestinal Surgery, Peking University People's Hospital, Beijing, China

Key Laboratory of Colorectal Cancer Diagnosis and Treatment Research, Beijing, China

Department of Gastrointestinal Surgery, Peking University People's Hospital, Beijing, China

Laboratory of Surgical Oncology, Peking University People's Hospital, Beijing, China.

yeyingjiang@pkuph.edu.cn.

Disclosure: The authors declare no conflicts of interest.

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