The value of red blood cell distribution width combined with serum cystatin C in the early diagnosis of pulmonary hypertension secondary to chronic obstructive pulmonary disease#br#
YUAN Sheng-fang1, SONG Ning2*, WANG Bu1, MA Shi-min2, ZHAO Jian-qing1
Journal of Hebei Medical University . 2020, (6): 624 -627,631 .  DOI: 10.3969/j.issn.1007-3205.2020.06.002