Bell T, Hill N, Mogle J, Sweeder L, Bhargava S. Longitudinal evaluation of perceived stress and memory complaints in the Einstein Aging Study. Anxiety Stress Copin. 2021 Jan;34(1):37-50. doi: 10.1080/10615806.2020.1836621
Engelhart L, Nelson L, Lewis S, Mordin M, Demuro-Mercon C, Uddin S, McLeod L, Cole B, Farr J. Knee injury and osteoarthritis outcome score subscales for patients with articular cartilage lesions of the knee. Am J Sports Med. 2012 Oct 1;40(10):2264-72.