The relationship between social support and professional identity of health professional students from a two-way social support theory perspective: chain mediating effects of achievement motivation and meaning in life. - Luo, Jian; Liu, Xiao-Bo; Yao, Qian; Qu, Yi; Yang, Jin; Lin, Ke; Pan, Shi-Rong; Wang, Tian-Yi; Dai, Yun; Chen, Huan-Yu; Chen, Jian-Min; Yang, Zheng (BMC medical education, 2024)