TY  - RPRT
TI  - Low-back pain during labor.
AU  - R Melzack
AU  - D Schaffelberg
PY  - 1987
DO  - 10.1016/0002-9378(87)90349-8
UR  - https://pubmed.ncbi.nlm.nih.gov/2953242/
ID  - 2953242
ER  -