@article{Larsen2003,
author = {Larsen, U. and Yan, S. and Yashin, A.I.},
title= {Controlling for postpartum amenorrhea and heterogeneity in the analysis of fecundability using birth interval data: A simulation study with application to Hutterite reproductive histories},
year = {2003},
doi = {10.1353/prv.2004.0004},
volume = {42},
number = {1},
pages = {1--22},
}