@article {pmid23093256,
	title = {Vaginal progesterone to prevent preterm birth in multiple pregnancy: a randomized controlled trial},
	journal = {J Perinat Med},
	volume = {40},
	number = {6},
	year = {2012},
	month = {Nov},
	pages = {593{\textendash}599},
	author = {Wood, S. and Ross, S. and Tang, S. and Miller, L. and Sauve, R. and Brant, R.}
}
