Productivity Loss in Population of Informal Caregivers to Diabetic Foot Syndrome Patients in Poland. - Macioch, T.; Sobol, E.; Mrozikiewicz-Rakowska, B.; Krakowiecki, A.; Mienicka, A.; Mlynarczuk, M.; Kasprowicz, M.; Paweska, J.; Hermanowski, T.R.; Karnafel, W. (Value in Health, 2013)