TY - RPRT TI - Newly developing endoscopic devices--shadow optics and micromachine. AU - Y J Chee AU - S W Lee AU - K Park PY - 1999 DO - 10.3349/ymj.1999.40.6.550 UR - https://pubmed.ncbi.nlm.nih.gov/10661031/ ID - 10661031 ER -