RT Journal Article SR Electronic T1 External quality assessment of clinical biochemical assays in a medium non-academic, non-research hospital laboratory. JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 87 OP 88 VO 32 IS 1 A1 Subhash C. Arya A1 Nirmala Agarwal A1 Shekhar Agarwal A1 Beena Michael YR 2011 UL http://smj.org.sa/content/32/1/87.abstract