1 From the Escola Superior de Tecnologia da Saúde de Lisboa (ESTeSL), Instituto Politécnico de Lisboa (C.L.), Lisboa, Portugal; Comprehensive Health Research Center (CHRC), Escola Nacional de Saúde Pública, Universidade Nova de Lisboa (C.L.), Lisboa, Portugal.
2 School of Public Health, Suzhou Medical College of Soochow University (C.-W.P.), Suzhou, China.
3 Institute for Research in Ophthalmology, Foundation for Ophthalmology Development (A.G.), Poznan, Poland.. Electronic address: ae.grzybowski@gmail.com.