Background Health Related Quality of Life (HRQoL) is an indicator of patient's physical, psychological and social life. HRQoL is influenced by experience, beliefs, perceptions and expectations, and measures subjective perspective of the patient himself. EQ-5D-5L and SF-12 questionnaires are validated instruments useful to measure HRQoL, increasingly administered in electronic formats. Objecti...

The authors are members of the Open Medicine team. ➣ The launch of open Medicine five years ago combined traditional scholarly values with modern norms of open access to information. Those of us who had worked within the framework of conventional medical journal publishing had observed how editorial independence in scholarly publishing could be eroded by the influence of revenue-driven and prof...

We identify five selected open problems in the theory of quantum information, which are rather simple to formulate, well studied literature, but technically not easy. As these enjoy diverse mathematical connections, they offer a huge breakthrough potential. The first four concern existence certain objects relevant for namely family symmetric informationally complete generalized measurements an ...

The aim of this paper is to give an alternative proof of a theorem about the existence of contact structures on five-manifolds due to Geiges. This theorem asserts that simply-connected five-mani-folds admit a contact structure in every homotopy class of almost contact structures. Our proof uses the open book construction of Giroux.