TY  - RPRT
TI  - Precisely wrong? Urinary fractionated metanephrines and peer-based laboratory proficiency testing.
AU  - Ravinder J Singh
AU  - Stefan K Grebe
AU  - Bingfang Yue
AU  - Alan L Rockwood
AU  - John C Cramer
AU  - Zoltan Gombos
AU  - Graeme Eisenhofer
PY  - 2005
DO  - 10.1373/clinchem.2004.043802
UR  - https://pubmed.ncbi.nlm.nih.gov/15681566/
ID  - 15681566
ER  -