TY - RPRT TI - A clinically practical method of manually assessing polyethylene liner thickness. AU - D Pollock AU - C J Sychterz AU - C A Engh PY - 2001 DO - 10.2106/00004623-200112000-00006 UR - https://pubmed.ncbi.nlm.nih.gov/11741058/ ID - 11741058 ER -