Feasibility of the intervention
RECRUITMENT
The participants were recruited from the antenatal clinic of the study hospital in Zhengzhou. Once pregnant, a medical record will be established after a comprehensive assessment. A total of 217 pregnant women were screened for eligibility from February to March 2022. Forty-one of them met the inclusion and exclusion criteria. Finally, 34 of the 41 eligible pregnant women consented to participate in the study. Thus, an 82.9% recruitment rate was achieved in this pilot study.As shown in Figs. 
Flow diagram of participant recruitmentConcerning the participation in the intervention protocol, all the retention pregnant women had completed 11 to 13 intervention sessions. Concerning the completion rate of the intervention protocol, all the retented participants completed 80% of the total intervention sessions.