Silberzahn, Bradley E <br/><br/>
Barriers and facilitators to retaining a cohort of street-based cisgender female sex workers recruited in Baltimore, Maryland, USA: results from the SAPPHIRE study.  [electronic resource] 

 -  BMC public health  Apr 2020 
 - 585 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>1471-2458 
<br/><br/><label>Standard No.: </label>10.1186/s12889-020-08723-4  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Adult<br/>Baltimore--epidemiology<br/>Cohort Studies<br/>Female<br/>HIV Infections--epidemiology<br/>Health Services Accessibility<br/>Humans<br/>Patient Selection<br/>Sex Workers--statistics & numerical data<br/>Sexually Transmitted Diseases--epidemiology