1.
J Occup Med
; 18(7): 444, 1976 Jul.
Article
in English
| MEDLINE
| ID: mdl-945814
2.
Lancet
; 1(7953): 246, 1976 Jan 31.
Article
in English
| MEDLINE
| ID: mdl-55549
3.
Lancet
; 1(7953): 246, 1976 Jan 31.
Article
in English
| MEDLINE
| ID: mdl-55550