Ganyani T, Kremer C, Chen D, Torneri A, Faes C, Wallinga J, Hens N.
Estimating the generation interval for coronavirus disease (COVID-19) based
on symptom onset data, March 2020. Euro Surveill. 2020 Apr;25(17):2000257.
doi: 10.2807/1560-7917.ES.2020.25.17.2000257. PMID: 32372755; PMCID:
PMC7201952.