منابع مشابه
Sham surgery controls are
Debate continues about the ethics of sham surgery controls. The most powerful argument for sham surgery controls is that rigorous experiments are needed to demonstrate safety and efficacy of surgical procedures. Without such experiments, there is danger of adopting worthless procedures in clinical practice. Opponents of sham surgery controls argue that sham surgery constitutes unacceptable viol...
متن کاملSham surgery controls are mitigated trolleys.
Debate continues about the ethics of sham surgery controls. The most powerful argument for sham surgery controls is that rigorous experiments are needed to demonstrate safety and efficacy of surgical procedures. Without such experiments, there is danger of adopting worthless procedures in clinical practice. Opponents of sham surgery controls argue that sham surgery constitutes unacceptable viol...
متن کاملPlacebos that harm: sham surgery controls in clinical trials.
Recent debates over the use of sham surgery as a control for studies of fetal tissue transplantation for Parkinson's disease have focused primarily on rival interpretations of the US federal regulations governing human-subjects research. Using the core ethical and methodological considerations that underwrite the equipoise requirement, we find strong prima facie reasons against using sham surge...
متن کاملNo Need for Labels: The Autofluorescence of Leishmania tarentolae Mitochondria and the Necessity of Negative Controls
BACKGROUND Fluorescence microscopy is a powerful tool to study the morphology and function of subcellular compartments or to determine the localization of proteins. The method is also regularly used for the analysis of parasitic protists including kinetoplastida. RESULTS Here, we report a significant autofluorescence of Leishmania tarentolae mitochondria. The autofluorescence, presumably caus...
متن کاملthe effect of taftan pozzolan on the compressive strength of concrete in the environmental conditions of oman sea (chabahar port)
cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
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ژورنال
عنوان ژورنال: The American Journal of Medicine
سال: 2019
ISSN: 0002-9343
DOI: 10.1016/j.amjmed.2018.07.030