The study fowchart is presented in Figs. 1 and 2. The prescreening and screening phases can take place 1 week before randomization. The total study period after randomization includes a 26-week intervention period and a 26-week follow-up period (see Figs. 1 and 2). All the raters are blind to the participants’ intervention status. During the study and follow-up periods, a total of 10 visits are scheduled: The main examinations take place in the screening phase (visit 0), before the start of the intervention (visit 1), after 98 daysof the intervention (visit 4), immediately after the end of the intervention (day 182, visit 6), and after the 26-week followup phase (day 365, visit 9); and the intermediate examinations take place on day 14 (visit 2), day 68 (visit 3), day 140 (visit 5), day 196 (visit 7), and day 273 (visit 8).