Guidance in author instructions of hematology and oncology journals: A cross sectional and longitudinal study

• Ingrid Toews,

  Affiliation Cochrane Germany, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany

  ⨯
• Nadine Binder,

  Affiliation Institute for Medical Biometry and Statistics, Faculty of Medicine and Medical Center - University of Freiburg, Freiburg, Germany

  ⨯
• Robert F. Wolff,

  Affiliation Kleijnen Systematic Reviews Ltd, Unit 6, Escrick Business Park, Escrick, York, United Kingdom

  ⨯
• Guenes Toprak,

  Affiliation Cochrane Germany, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany

  ⨯
• Erik von Elm,

  Affiliation Cochrane Switzerland, Institute of Social and Preventive Medicine (IUMSP), Lausanne University Hospital, Lausanne, Switzerland

  ⨯
• Joerg J. Meerpohl

  * E-mail: meerpohl.jj@gmail.com

  Affiliations Cochrane Germany, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany, Centre de Recherche Épidémiologie et Statistique Sorbonne Paris Cité – U1153, Inserm / Université Paris Descartes, Cochrane France, Hôpital Hôtel-Dieu, Paris, France

  ⨯