The Method Quality of Cross-Over Studies Involved in Cochrane Systematic Reviews

• Hong Ding ,

  Contributed equally to this work with: Hong Ding, Guang Li Hu

  ¶‡ These authors are co-first authors on this work.

  Affiliation Department of Epidemiology, School of Public Health and Tropical Medicine, Southern Medical University, Guangdong, China

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• Guang Li Hu ,

  Contributed equally to this work with: Hong Ding, Guang Li Hu

  ¶‡ These authors are co-first authors on this work.

  Affiliation Department of Epidemiology, School of Public Health and Tropical Medicine, Southern Medical University, Guangdong, China

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• Xue Yan Zheng,

  Affiliation Department of Epidemiology, School of Public Health and Tropical Medicine, Southern Medical University, Guangdong, China

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• Qing Chen,

  Affiliation Department of Epidemiology, School of Public Health and Tropical Medicine, Southern Medical University, Guangdong, China

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• Diane Erin Threapleton,

  Affiliation Division of Epidemiology, School of Public Health and Primary Care, the Chinese University of Hong Kong, Hong Kong, China

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• Zeng Huan Zhou

  * E-mail: zhouzenghuan@163.com

  Affiliation Department of Epidemiology, School of Public Health and Tropical Medicine, Southern Medical University, Guangdong, China

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