1. National Statistical Office, Ministry of Digital Economy and Society, Thailand. The informal employment survey (2018).
http://www.nso.go.th/sites/
2. Homsombat, T., Chaiklieng, S.: Physical fitness and muscular discomfort among informal garment female workers in Udon Thani Province, Thailand. J. Med. Assoc. Thai. 100(2), 230–238 (2017)
3. Thotsathit, N., Puntumetakul, R., Eungpinichpong, W., Peungsuwan, P.: Prevalence of musculoskeletal disorders in sewing occupation in Khon Kean Province. KKU. Res. J. 11, 47–54 (2011)
4. Kampong, T., Chaiklieng, S.: Risk Factors for work-related back pain among informal garment workers in Nong Rua district, Khon Kean Province. KKU. J. Public Health Res. 7(2), 70–78 (2013)
5. Chaiklieng, S., Suggaravetsiri, P., Pultumethakul, R.: Prevalence and risk factors for work-related shoulder pain among informal garment workers in the Northeast of Thailand. Small Enterpr. Res. 21(2), 180–189 (2014)