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 T Shane Topham, Gail E Bingham and Harri Latvakoski (Utah State University Research Foundation, North Logan, UT, USA), Igor Podolski and Vladimir S Sychev (Institute of Biomedical Problems of the Russian Academy of Sciences (SSCRF-IBMP RAS), Moscow, Russia) and Andre Burdakin (Russian Scientific Research Institute for Optical and Physical Measurements (VNIIOFI), Moscow, Russia) was published online by npj Microgravity on August 20, 2015.