@article {cao2007effect,
	title = {Effect of semen sampling frequency on seminal antiretroviral drug concentration},
	journal = {Clinical Pharmacology \& Therapeutics},
	volume = {83},
	number = {6},
	year = {2007},
	pages = {848{\textendash}856},
	publisher = {Nature Publishing Group},
	author = {Cao, Y and Ndovi, T and Parsons, T and Guidos, A and Caffo, B and Hendrix, C}
}
