Gastroenterologists may also find it helpful to direct interested patients to well established sources of health information that are free of commercial influence.
It is, therefore, of high interest to evaluate the performances of newly introduced sources to highlight their benefits and limitations in comparison to other well established sources.
It is well established that activation of oncogenes can lead to ROS production [ 51], and ROS is an established source of endogenous double-strand breaks [ 52].
It is a well established fact throughout Europe, that contamination by peri-parturient ewes in the first 6 8 weeks of spring is the major source of contamination that determines the magnitude of pasture larval numbers in autumn [ 11].
Lead poisoning from ammunition sources is a well established cause of mortality in many birds of prey globally [14].
Effluent of municipal sewage treatment plants is a well established and constantly scrutinized source of organic wastewater compounds (OWCs) detectable in the environment (1– 4).
Although smoking is a well-established source of cadmium exposure, we found similar estimates for an association between increased UCd and breast cancer, independent of tobacco use in both samples, as was also reported by McElroy [ 11] in a Wisconsin regional sample.
"The upturn in the major non-O.E.C.D. countries, especially in Asia and particularly in China, is now a well-established source of strength for the more feeble O.E.C.D. recovery," it said.
This is a well-established source of 'systematic bias'.
The Demographic and Health Surveys (DHS) are a well-established source of reliable population data with a substantial focus on childhood diseases, which are a great deterrent militating against the demographics of under-developed nations.
29 The Demographic and Health Survey (DHS), funded by the US Agency for International Development (USAID), is a well-established source of reliable population-level data with a substantial focus on health.
