Birth ball for pregnant women in labour research protocol: a multi-centre randomised controlled trial.
Yeung MPS, Tsang KWK, Yip BHK, Tam WH, Ip WY, Hau FWL, Wong MKW, Ng JWY, Liu SH, Chan SSW, Law CK, Wong SYS.
Yeung MPS, et al. Among authors: tam wh.
BMC Pregnancy Childbirth. 2019 May 6;19(1):153. doi: 10.1186/s12884-019-2305-8.
BMC Pregnancy Childbirth. 2019.
PMID: 31060522
Free PMC article.