TY - RPRT TI - Endoscopic equipment--quality control using a specially designed light meter. AU - H Sells AU - R Biggs AU - R Macdonagh PY - 1998 DO - 10.1046/j.1464-410x.1998.00731.x UR - https://pubmed.ncbi.nlm.nih.gov/9698675/ ID - 9698675 ER -