TY  - RPRT
TI  - Longitudinal research on the menopause-methodological challenges.
AU  - Aila Collins
AU  - Britt-Marie Landgren
PY  - 2002
DO  - 10.1034/j.1600-0412.2002.810701.x
UR  - https://pubmed.ncbi.nlm.nih.gov/12190830/
ID  - 12190830
ER  -