We include:

(1) Empirical data in R format (Lambda_dataset.Rdata) 

(2) The R Code (R_code.R) to reproduce the main results in the paper, namely, the two relationships between: 
(i) child and adult mortality (Model 1a), 
(ii) child mortality and Gompertz-slope of adult mortality (Model 2), 
for ages 40-59, 40-64 and 40-69. 
This corresponds to result showed in Tables 3, 6, S1, S3, and also in Figures 4, S2, and S4.