OBJECTIVE To report the results of penetrating keratoplasty performed by residents. METHOD A retrospective medical record review of all patients undergoing penetrating keratoplasty performed by residents at our institution from April 1998 to April 2002. RESULTS Forty penetrating keratoplasty procedures were performed by 8 residents. The most common indication was keratoconus (17 eyes [43%])...

consent, and selection bias in a study of delirium. J Med Ethics 2005; 31: 137–43. 18. Sampson EL, Blanchard MR, Jones L, Tookman A, King M. Dementia in the acute hospital: prospective cohort study of prevalence and mortality. Br J Psychiatry 2009; 195: 61–6. 19. Meagher DJ. Regular review: Delirium: optimising management. BMJ 2001; 322: 144–9. 20. McMurdo ME, Gillespie ND. Urinary tract infect...

Gareth Evans’ account of Identifi cation-freedom (IF), which he develops in Chapters 6 and 7 of The Varieties of Reference (henceforth VR) is almost universally misunderstood. Howell is guilty of this same misunderstanding, and as a result claims to have mounted a criticism of Evans, when in fact he has not. I will take the occasion of Howell’s otherwise insightful article to clarify Evans’ pos...

Correlative light and electron microscopy (CLEM) is an emerging technique which combines functional information provided by fluorescence microscopy (FM) with the high-resolution structural information of electron microscopy (EM). So far, correlative cryo microscopy of frozen-hydrated samples has not reached better than micrometre range accuracy. Here, a method is presented that enables the corr...

We report accuracy and precision achieved in the automated analysis for cholesterol in a long-term multilaboratory study, presenting and evaluating the significance of data accumulated by 12 Lipid Research Clinics (LRC's) in the analysis of 18 unknown surveillance pools during three years. The average bias for all pools and for 13 autoAnalyzer II (Technicon Instruments Corp., Tarrytown, N.Y. 10...

In many cases, the three-dimensional reconstructions from atom probe tomography (APT) are not sufficiently accurate to resolve crystallographic features such as lattice planes, shear bands, stacking faults, dislocations or grain boundaries. Hence, correlative crystallographic characterization is required in addition to APT at the exact same location of the specimen. Also, for the site-specific ...