Efficiency of respiratory rate measurements: Comment on Black et al., 2015: "Can simple mobile phone applications provide reliable counts of respiratory rates in sick infants and children? An initial evaluation of three new applications"
Int J Nurs Stud. 2015 Jul;52(7):1279-80.
doi: 10.1016/j.ijnurstu.2015.03.014.
Epub 2015 Mar 27.