P. Chmielewski, K. Borysławski, K. Chmielowiec, and J. Chmielowiec, “Longitudinal and cross-sectional changes with age in selected anthropometric and physiological traits in hospitalized adults: an insight from the Polish Longitudinal Study of Aging (PLSA)”, AR, vol. 78, no. 3, pp. 317–336, Dec. 2015.