TY - RPRT TI - Optimal thyrotropin level: normal ranges and reference intervals are not equivalent. AU - Richard A Dickey AU - Leonard Wartofsky AU - Stanley Feld PY - 2005 DO - 10.1089/thy.2005.15.1035 UR - https://pubmed.ncbi.nlm.nih.gov/16187911/ ID - 16187911 ER -