@article{Visalyaputra_2006, title={When is a Labor Painless?}, volume={58}, url={https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/245922}, abstractNote={<p>-</p>}, number={8}, journal={Siriraj Medical Journal}, author={Visalyaputra, Shusee}, year={2006}, month={Aug.}, pages={984–985} }