@article{Bittles1991,
author = {Bittles, A.H and Mason, W.M. and Greene, J. and Rao, N.A.},
title= {Reproductive behavior and health in consanguineous marriages},
year = {1991},
doi = {10.1126/science.2028254},
journal = {Science},
volume = {252},
number = {5007},
pages = {789--794},
}