Dataset:  steroid_doping.csv

Source: E. Alladio, R. Caruso, E.Gerace, E. Amante, A. Salomone, M. Vincente 
(2016). "Application of Multivariate Statistics to the Steroidal Module
of the Athlete Biological Passport: A Proof of Concept Study,"
Analytica Chimica Acta, Vol. 922, p. 19-29.

Description: Study with 6 subjects measured at varying numbers of times
on various measures to be able to detct doping in athletes.
Variables:
subject 
measurement  time_meas
5a-androstane-3a-17b-diol (adiol5a)
5b-androstane-3a-17b-diol (adiol5b)
androsterone
dehydroepiandrosterone (DHEA)
5a-dihydrotestosterone (DHT)
epitestosterone  (epitest)
etiocholanolone (etio)
testosterone
Other variables generated by authors:
adiol5a/adiol5b
adiol5a/epitest
androsterone/etio
androsterone/testosterone
testosterone/epitest