TY - RPRT TI - A TECHNIC FOR AORTIC ROOT CLOSURE. AU - C A HUFNAGEL AU - P W CONRAD PY - 1963 DO - 10.1016/0002-9610(63)90142-9 UR - https://pubmed.ncbi.nlm.nih.gov/14062958/ ID - 14062958 ER -