The good news for the RN nurse salary is that the need for registered nurse will only keep increasing. This is the forecast of USA Labor Statistics department.
Martineau AR, Wilkinson RJ, Wilkinson KA, Newton SM, Kampmann B, Hall BM, Packe GE, Davidson RN, Eldridge SM, Maunsell ZJ, Rainbow SJ, Berry JL, Griffiths CJ.
A single dose of vitamin D enhances immunity to mycobacteria.
Am J Respir Crit Care Med. 2007