Preoperative soluble cluster of differentiation 40 ligand level is associated with outcome of pulmonary endarterectomyCentral MessagePerspective oleh Ayako Shigeta, MD, PhD, Nobuhiro Tanabe, MD, PhD, FCCP, Akira Naito, MD, PhD, Hajime Yokota, MD, PhD, Fumiaki Kato, MD, PhD, Takayuki Jujo-Sanada, MD, PhD, Seiichiro Sakao, MD, PhD, Keiichi Ishida, MD, PhD, Masahisa Masuda, MD, PhD, Koichiro Tatsumi, MD, PhD