Function for computing the f2, time points have to be identical.
Validity criteria of the f2 have to be be checked in advance.
See Moellenhoff et al. (2018) <doi:10.1002/sim.7689>
Usage
f2(conc1, conc2)
Arguments
conc1, conc2
data frames containing the concentrations obtained for each of the two formulations
# NOT RUN {data(example_data)
conc1<-select(filter(example_data,Group=="1"),-Tablet,-Group)
conc2<-select(filter(example_data,Group=="2"),-Tablet,-Group)
f2(conc1=conc1,conc2=conc2)
# }