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
Park EM, Deal AM, Yopp JM, Chien SA, McCabe S, Hirsch A, Bowers SM, Edwards T, Rosenstein DL. Parenting through grief: a cross-sectional study of recently bereaved adults with minor children. Palliat Med. 2021 Dec;35(10):1923-32. doi: 10.1177/02692163211040982
Poole WK, Pollack M, Rapoport I, Williams V, Koch MA, Rao AV, Bartel DA. Use of Multivariate Methods in Quantifying the Variability in the Perception of Neonatal Intensive Care Unit Characteristics in Nine Hospitals in the Washington, DC Area: the NIH-DC Initiative to Reduce Infant Mortality in Minority Populations in the District of Columbia. Interstat. 2002 Jan 1.