Know the score :  findings from the national gay men's sex survey 2001 / 
David Reid ... [et al.]. 
 - London :  Terrence Higgins Trust, Community HIV and AIDS Prevention Strategy,  Sigma Research ;  2002 
 - 53 p. ;  30 cm 
<br/><br/> In calce al front.: original research report. 
<br/><br/><label>ISBN: </label>1872956645