TY - RPRT TI - The circulation time in the aged. AU - J L Willems AU - J R Roelandt AU - H R Van de Vel AU - J V Joossens PY - 1971 DO - 10.1016/0002-9149(71)90252-9 UR - https://pubmed.ncbi.nlm.nih.gov/5100916/ ID - 5100916 ER -