Cumulative exponential beta functionSource:
Equation (2), page 4 from Bluck, "Recent advances in the interpretation of the 13C octanoate breath test for gastric emptying"
time in minutes
named vector of coefficients; only
betaare required. Note that
kis measured in 1/min (e_g_ 0_01/min), while often it is quoted as 1/h (e_g_ 0_6/h).