Guest Editors: Eric Jelin, MD (Johns Hopkins Hospital, Baltimore, Maryland, USA) and George B. Mychaliska (University of Michigan, Michigan Medicine, Ann Arbor, Michigan, USA)

Guest Editor: Felice D’Arco, MD (Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK)

The "Meet the Professor" series features interviews with the global Key Opinion Leaders, providing a window into the new developments, breakthroughs, and achievements in the interviewees’ professional fields, both clinically and academically.

The “Cover Story” series features original artworks by children under 12 and the story behind the artworks.

Guest Editors: Dilip R. Patel (Western Michigan University Homer Stryker MD School of Medicine, USA) and Joav Merrick (Hadassah Hebrew University Medical Center, Israel)

Guest Editors: Justin Godown (Monroe Carell Jr. Children’s Hospital, USA) and Shawn C. West (Children's Hospital of Pittsburgh of UPMC, USA)

Guest Editors: Kenneth Tan (Monash University, Australia), Dirk Bassler (University Hospital Zurich and University of Zurich, Switzerland) and Shoo K. Lee (University of Toronto, Mt. Sinai Hospital, Canada)

Guest Editor: Dietmar Schranz (Johann-Wolfgang Goethe University Frankfurt, Germany)

Guest Editor: Andrew S. Day (University of Otago Christchurch, New Zealand)

Guest Editors: Derek S. Wheeler (Cincinnati Children’s Hospital Medical Center, USA) and Erika L. Stalets (University of Cincinnati College of Medicine, USA)

Guest Editor: Manmohan K. Kamboj (Nationwide Children’s Hospital, USA)

Guest Editor: Dilip R. Patel (Western Michigan University Homer Stryker MD School of Medicine, USA)