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The European Society of Cardiology ESCC) suggests, in the last edition of guidelines on the diagnosis and management of acute pulmonary embolism, that the best diagnostic strategy to confirm or exclude PE suspicion needs an appropriate combination of clinical assessment, plasma D-dimer measurement, and computed tomographic pulmonary angiography (CTPA) [2].
Background: The World Health Organization (WHO) released the fourth edition of Guidelines for Drinking-Water Quality in July 2011.
The WHO does not plan to reinstate a guideline for molybdenum before the 5th edition of Guidelines for Drinking-water Quality, scheduled for publication in late 2020 [ 3].
In the most recent edition of Guidelines for Drinking-water Quality (2011), the WHO withdrew, suspended, did not establish, or raised guidelines for the inorganic toxic substances manganese, molybdenum, nitrite, aluminum, boron, nickel, uranium, mercury, and selenium.
(WHO 1996) The WHO issued a more protective health-based drinking-water guideline of 400 µg/L for Mn in the third edition of Guidelines for Drinking-Water Quality, published in 2004.
According to WHO plans [ 3], for some chemicals, acceptability problems may justify the withdrawal of formal guideline values that are currently based on adverse health effects in the next edition of Guidelines for Drinking-water Quality.
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Thus, it is unclear at this point whether toxicological data published after 2009, the date of the most recent paper cited by the WHO in setting the 2011 guideline, will be considered in the next edition of the Guidelines for Drinking-water Quality.
In the first edition of the Guidelines for Drinking-water Quality, published in 1984, a guideline value of 0.1 mg/l [100 µg/L] was established for manganese, based on its staining properties.
In 2011, the WHO released the 4th edition of its Guidelines for Drinking-water Quality, in which the WHO withdrew the guidelines for manganese and molybdenum, suspended the guideline for long-term exposure to nitrite, did not establish a guideline for aluminum despite stating that a health-based guideline could be derived, and raised the guidelines for boron, nickel, uranium, mercury and selenium.
Therefore, stakeholders might choose to develop their own independent health-based drinking-water standards for molybdenum or, at the very least, continue using the former WHO guideline of 70 μg/L published in the previous (3rd) edition of the Guidelines for Drinking-water Quality [ 65].
In 2010, the WHO 1 malaria treatment guidelines made a new recommendation (box 2, additional recommendations in the second edition of the guidelines) for PQ.
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