Bond JC, Geller RJ, White KO, Hatch EE, Rothman KJ, Wise LA. Concordance of self-reported sexual intercourse frequency between members of mixed-sex couples attempting conception. Can J Hum Sex. 2022 Dec;31(3):342-53. doi: 10.3138/cjhs.2021-0059
Quinlan SC, Hawes JCL, Mines D, Ahmed S, Lanes S, Mehta V, Holick CN, Santanello N, Mast TC. Performance of an administrative claims algorithm to estimate the incidence of pure red cell aplasia in chronic hepatitis C patients. Epidemiology reports. 2015;3(1). doi: 10.7243/2054-9911-3-1
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.