. 2023 Apr 12;12:e43503. doi: 10.2196/43503
©Carmen Koschollek, Marie-Luise Zeisler, Robin A Houben, Julia Geerlings, Katja Kajikhina, Marleen Bug, Miriam Blume, Robert Hoffmann, Marcel Hintze, Ronny Kuhnert, Antje Gößwald, Patrick Schmich, Claudia Hövener. Originally published in JMIR Research Protocols (https://www.researchprotocols.org), 12.04.2023.
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Figure 1.
Primary sampling units (PSUs) of the interview survey German Health Update Fokus (GEDA Fokus). BIK: Beratung Information Kommunikation.