Journal Article 85 English Abstract 73 Developed Countries 63 Europe 59 Mediterranean Countries 59 Southern Europe 56 Italy 55 Population 52 Demographic Factors 51 Population Dynamics 44 Research Methodology 33 Bibel 27 Mortality 23 Family And Household 18 Population Characteristics 18 Demography 17 Fertility 17 Social Sciences 17 Katholische Kirche 16 Historical Demography 15 Age Factors 12 Biology 12 Economic Factors 12 Fertility Measurements 11 Nuptiality 11 Vatikanisches Konzil 11 COVID-19 Pandemic, 2020 9 Differential Mortality 9 Family Planning 9 Socioeconomic Factors 9