(Q50652515)
Statements
Relative validity of a food frequency questionnaire among tin miners in China: 1992/93 and 1995/96 diet validation studies (English)
M R Forman
J Zhang
L Nebeling
S X Yao
M J Slesinski
Y L Qiao
S Ross
S Keith
M Maher
C Giffin
M Barrett
P R Taylor
1 September 1999