@article{Parr2007,
author = {Parr, N.J. and Siedlecky, S.},
title= {Use of ‘dual protection’ and other combinations of contraceptive methods in Australia},
year = {2007},
doi = {10.1111/j.1753-6405.2007.00145.x},
journal = {Australian and New Zealand Journal of Public Health},
volume = {31},
number = {6},
pages = {567--570},
}