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Correspondence
Answer to ‘COPD and IPF: it's all about regulation and balance’
  1. Jia Hou1,2,
  2. Yongchang Sun1,
  3. Hui Zeng3
  1. 1 Department of Respiratory Medicine, Beijing Tongren Hospital, Capital Medical University, Beijing, China
  2. 2 Department of Respiratory and Critical Care Medicine, General Hospital of Ningxia Medical University, Yinchuan, China
  3. 3 Institute of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China
  1. Correspondence to Professor Yongchang Sun, Department of Respiratory Medicine, Beijing Tongren Hospital, Capital Medical University, No. 1 Dongjiaominxiang, Dongcheng District, Beijing 100730, China; suny{at}ccmu.edu.cn and Professor Hui Zeng, Institute of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Jingshundongjie 8, Beijing 100015, China; zenghui@ccmu.edu.cn

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We thank Tzouvelekis and Bouros1 for their interest in our recent article in Thorax.2 The theory of Hippocrates reminds us of the balance theory informing traditional Chinese medicine. Ancient Chinese scholars believed there were two natural, complementary yet contradictory forces in our universe: yin and yang, with the former being feminine or negative and the latter masculine or positive. Both of them are always in a state of dynamic balance. A balanced state …

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Footnotes

  • Contributors JH, YS and HZ drafted the manuscript which was amended and finally approved by YS and HZ.

  • Competing interests None.

  • Patient consent Obtained.

  • Provenance and peer review Not commissioned; internally peer reviewed.

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