Two main ill-conditioned problems are the numerical instability of solution and the nonexistence of solution.
Peter White, a professor of psychological medicine at the Barts and The London School of Medicine and Dentistry at Queen Mary University of London, said: "This well-conducted study shows that schoolchildren who miss school without explanation fall between the stools of school and the health service, and do so for two main reasons: emotional ill-health and chronic fatigue syndrome (CFS).
It measures well-being over a few weeks [39 items separated into two main scales (satisfaction, ill health)] and was used to assess whether participation per se had an influence on well-being, regardless of exposure.
Two main causes of the system's ills are century-old business models, for the general hospital and the physician's practice, both of which are based on treating illness, not promoting wellness.
Transport impacts on critically ill patients via two main mechanisms.
The two main contributing factors for anemia in the critically ill are inflammation and iron deficiency, which have opposite effects on iron metabolism (see above).
There are two main ones: "Classic" money laundering involves creating a fictitious business and adding ill-gotten gains into its books.
These studies advocate two main hypotheses: one hypothesis is that unemployment is caused by pre-existing ill health, another that unemployment leads to adverse changes in health behaviour.
In 2005, Haji-Michael [ 20] discussed two main reasons why, despite the existence of guidelines, interhospital transfer of the critically ill patient is still associated with avoidable mishaps.
The SCN contains two main compartments (shell and core), but the role of each region in system-level coordination remains ill defined.
