I Need A DoctorCifra de Viola

Capo in the 3rd fret. 

Em                  C 
Im about to lose my mind 
                         D 
you've been gone for so long 
                    D 
I'm running out of time 
           C 
I need a doctor 
            C 
call me a doctor 
          B 
I need a doctor, doctor 
                    Em 
to bring me back to life	 


can also play this pattern: 
Am F  G 
F E Am