Therapeutic play intervention on children's perioperative anxiety, negative emotional manifestation and postoperative pain: a randomized controlled trial

- He, Hong-Gu; Zhu, Lixia; Chan, Sally Wai-Chi; Liam, Joanne Li Wee; Li, Ho Cheung William; Ko, Saw Sandar; Klainin-Yobas, Piyanee; Wang, Wenru