Observation on the clinical efficacy of ultrasound-guided multi-target precise injection combined with shoulder suspension squat exercise in the treatment of primary frozen shoulder. - ZHANG, Wenbo; CHEN, Zaifei; LI, Guodong; DU, Changsheng; WU, Wenxu; KONG, Weijun (Journal of Practical Medicine / Shiyong Yixue Zazhi, 2026)