This article by Kuniaki Otsuka, Yutaka Kubo, Mitsutoshi Hayashi, Naomune Yamamoto and Koichi Shibata (Tokyo Women’s Medical University, Tokyo, Japan), Germaine Cornelissen (University of Minnesota, Minneapolis, MN, USA), Tatsuya Aiba, Satoshi Furukawa, Hiroshi Ohshima and Chiaki Mukai (Japan Aerospace Exploration Agency, Tokyo, Japan) was published online by npj Microgravity on November 30, 2015.

This article by Brian Crucian and Duane Pierson (NASA Johnson Space Center, Houston, TX, USA), Raymond P Stowe (Microgen Laboratories, La Marque, TX, USA), Satish Mehta (Enterprise Advisory Services, Inc., Houston, TX, USA), Heather Quiriarte (JES Tech, Houston, TX, USA) and Clarence Sams (Space and Clinical Operations Division, Houston, TX, USA) was published online by npj Microgravity on September 3, 2015.