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. 2020 Aug 31;59(4):651–661. doi: 10.1007/s00411-020-00868-5

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© The Author(s) 2020

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Fig. 6 — Trajectories of ²¹⁸Po, ²¹⁴Pb and ²¹⁴Po inside a central airway bifurcation (left) and maximum enhancement factors assuming deposition alone or deposition and clearance