{Reference Type}: Letter {Title}: Efficacy of baricitinib in synovitis, acne, pustulosis, hyperostosis, and osteitis syndrome: A case series. {Author}: Liu S;Yu Y;Liu Y;Ma M;Li C; {Journal}: Joint Bone Spine {Volume}: 90 {Issue}: 5 {Year}: 2023 09 29 {Factor}: 5.263 {DOI}: 10.1016/j.jbspin.2023.105587