Figure 4.

Main interventions evaluated over time (1993–2011). Main interventions evaluated over time (1993–2011). Illustration of the proportionate distribution of the seven most commonly investigated interventions by means of a modelling framework by the total number of publications in each time period.

van Kleef et al. BMC Infectious Diseases 2013 13:294   doi:10.1186/1471-2334-13-294
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