TY - RPRT TI - A study on the basic nature of human biological aging processes based upon a hierarchical factor solution of the age-related physiological variables. AU - E Nakamura PY - 1991 DO - 10.1016/0047-6374(91)90128-m UR - https://pubmed.ncbi.nlm.nih.gov/1745072/ ID - 1745072 ER -