Speak-up culture in an intensive care unit in Hong Kong: a cross-sectional survey exploring the communication openness perceptions of Chinese doctors and nurses

George Wing Yiu Ng, Jack K H Pun, Eric Hang Kwong So, Wendy Wai Hang Chiu, Avis Siu Ha Leung, Yuk Han Stone, Chung Ling Lam, Sarah Pui Wa Lai, Rowlina Pui Wah Leung, Hing Wah Luk, Anne Kit Hung Leung, Kin Wah Au Yeung, Kang Yiu Lai, Diana Slade, Engle Angela Chan