TY  -  
T1  - Letter to the Editor : [Letter] 
SN  -  /  
UR  - http://hdl.handle.net/10138/228087 
T3  -  
A1  - Hemilä, Harri 
A2  -  
PB  -  
Y1  - 2009 
LA  - eng 
AB  - ... 
VO  -  
IS  -  
SP  -  
OP  -  
KW  - 314 Health sciences; 3142 Public health care science, environmental and occupational health 
N1  -   
PP  -  
ER  -