TY - GEN AU - Hanley,D A TI - Parathyroid hormone and age SN - 0028-4793 PY - 1979///1121 KW - Adult KW - Age Factors KW - Aged KW - Female KW - Humans KW - Male KW - Middle Aged KW - Parathyroid Hormone KW - blood KW - Sex Factors N1 - Publication Type: Letter ER -