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Middeldorp, Marit, Alies van Lier, Nicoline van der Maas, Irene Veldhuijzen, Wieke Freudenburg, Nina M. van Sorge, Elisabeth A.M Sanders, Mirjam J. Knol, و Hester E. de Melker. "Short Term Impact of the COVID-19 Pandemic On Incidence of Vaccine Preventable Diseases and Participation in Routine Infant Vaccinations in the Netherlands in the Period March-September 2020." Vaccine 2021.

Middeldorp, Marit, et al. "Short Term Impact of the COVID-19 Pandemic On Incidence of Vaccine Preventable Diseases and Participation in Routine Infant Vaccinations in the Netherlands in the Period March-September 2020." Vaccine 2021.