@article{Maheshwari2011,
author = {Maheshwari, A. and Griffiths, S. and Bhattacharya, S.},
title= {Global variations in the uptake of single embryo transfer},
year = {2011},
doi = {10.1093/humupd/dmq028},
volume = {17},
number = {1},
pages = {107--120},
}