TY  - RPRT
TI  - Menarche and menstrual problems.
AU  - C C HANDELMAN
PY  - 1961
DO  - 10.1016/s0031-3955(16)31093-8
UR  - https://pubmed.ncbi.nlm.nih.gov/13711177/
ID  - 13711177
ER  -