Redirecting you to http://www.ncbi.nlm.nih.gov/pubmed?term=Bohl%20D%2C%20Raymond%20HF%2C%20Arnold%2C%20MP%2C%20McFarland%20W.%20Concurrent%20sexual%20partnerships%20and%20racial%20disparities%20in%20HIV%20infection%20among%20men%20who%20have%20sex%20with%20men.%20Sex%20Transm%20Inf.%202009%3B85(5)%3A367-369.