Department of Gastroenterology, Hepatology, and Nutrition, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China. Institute of Pediatric Infection, Immunity and Critical Care Medicine, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China. Danone Nutricia Research, Health & Science China, Utrecht, Netherlands. Danone Open Science Research Center, Shanghai, China. Vrije Universiteit Brussel, KidZ Health Castle, Brussels, Belgium.