TY  - BOOK
A1  - Kaprio, J.
A1  - Koskenvuo, M.
A1  - Artimo, M.
A1  - Sarna, S.
A1  - Rantasalo, I.
T1  - The Finnish twin registry: Baseline characteristics: Section I: Materials, methods, representativeness and results for variables special to twin studies
Y1  - 1979
CY  - Helsinki
PB  - Helsingin yliopiston monistuspalvelu

ER  -