Development of a Web GIS for small-scale detection and analysis of COVID-19 (SARS-CoV-2) cases based on volunteered geographic information for the city of Cologne, Germany, in July/August 2020.
Int J Health Geogr. 2021 Aug 28;20(1):40. doi: 10.1186/s12942-021-00290-0. Int J Health Geogr. 2021. PMID: 34454536 Free PMC article.