TY - RPRT TI - [The quadri-cusp aortic valve: a congenital defect, responsible for pathologic changes?]. AU - C Vicol AU - G Rupp AU - E Struck PY - 1997 DO - 10.1007/s003920050091 UR - https://pubmed.ncbi.nlm.nih.gov/9340945/ ID - 9340945 ER -