Yasumitsu-Lovell, KahokoThompson, LucyFernell, ElisabethEitoku, MasamitsuSuganuma, NarufumiGillberg, ChristopherJapan Environment and Children’s Study Group2021-05-312021-05-312021-04-29Yasumitsu-Lovell, K, Thompson, L, Fernell, E, Eitoku, M, Suganuma, N, Gillberg, C & Japan Environment and Children’s Study Group 2021, 'Birth month and infant gross motor development : Results from the Japan Environment and Children’s Study ', PloS ONE, vol. 16, no. 5, e0251581. https://doi.org/10.1371/journal.pone.02515811932-6203https://hdl.handle.net/2164/16584Funding: The Japan Environment and Children’s Study is funded by the Ministry of the Environment, Japan. Acknowledgments The authors are grateful to all of the JECS participants; all individuals involved in data collection; the Japan Environment and Children’s Study Group (See Appendix); Nagamasa Maeda, Mikiya Fujieda, Naomi Mitsuda, Atsuko Mori, and Naw Awn J-P of the Kochi Regional Centre of the JECS; and Sifa Marie Joelle Muchanga of the National Center for Global Health and Medicine. The findings and conclusions of this article are solely the responsibility of the authors and do not represent the official views of the Ministry of the Environment, Japan. Members of the JECS Group as of 2021: Michihiro Kamijima (principal investigator, Nagoya City University, Nagoya, Japan), Shin Yamazaki (National Institute for Environmental Studies, Tsukuba, Japan), Yukihiro Ohya (National Center for Child Health and Development, Tokyo, Japan), Reiko Kishi (Hokkaido University, Sapporo, Japan), Nobuo Yaegashi (Tohoku University, Sendai, Japan), Koichi Hashimoto (Fukushima Medical University, Fukushima, Japan), Chisato Mori (Chiba University, Chiba, Japan), Shuichi Ito (Yokohama City Univer- sity, Yokohama, Japan), Zentaro Yamagata (University of Yamanashi, Chuo, Japan), Hidekuni Inadera (University of Toyama, Toyama, Japan), Takeo Nakayama (Kyoto University, Kyoto, Japan), Hiroyasu Iso (Osaka University, Suita, Japan), Masayuki Shima (Hyogo College of Medicine, Nishinomiya, Japan), Youichi Kurozawa (Tottori University, Yonago, Japan), Naru- fumi Suganuma (Kochi University, Nankoku, Japan), Koichi Kusuhara (University of Occupa- tional and Environmental Health, Kitakyushu, Japan), and Takahiko Katoh (Kumamoto University, Kumamoto, Japan).14821545engR MedicineRJournal article10.1371/journal.pone.0251581165