A randomised comparative evaluation of the copper 7, multiload copper 250 and T copper-22OC IUDs.
              
            
            
  
    
      
        Goh TH, Sinnathuray TA, Sivanesaratnam V, Sen DK, Lim LS, Ratnam SS, Karim SM, McCarthy T, Hutapea H, Hanafiah MJ, Simandjuntak P.
        
      
    
    Goh TH, et al. Among authors: mccarthy t.
    Contraception. 1983 Jan;27(1):75-84. doi: 10.1016/0010-7824(83)90058-6.
    Contraception. 1983.
  
  
  PMID: 6839761
  
  
    
  
  Clinical Trial.