Our bodies require other elements, including non-metal elements such as phosphorus (P), sulphur (S) and chlorine (Cl), and metal elements like potassium (K), sodium (Na), calcium (Ca) and ...

and leukopenia (Table S1 in the Supplementary Appendix, available with the full text of this letter at NEJM.org). A nasopharyngeal swab obtained at admission was positive for influenza A but ...

Learn more about our process and partners here. If you need to terminate a worker, a termination of employment letter can help. Check out these free termination letter templates to get started. If you ...

Sometimes, when you apply for a visa to visit Canada, we ask you to give us a letter of invitation from someone in Canada. A letter of invitation doesn’t guarantee that we’ll issue a visa. Visa ...

The intermittent states were found between two regular periodic states and obtained for specific flow rate values from 0.020 to 0.082 min −1. Phenomenological analysis based on the quantitative ...