References
1. Malapati R, Vuong Y, Nguyen T. Reporting cervical effacement as a percentage: How accurate is it? Open J Obstet Gynecol. 2013;03:569-72.
2. Vogel JP, Chawanpaiboon S, Moller AB, Watananirun K, Bonet M, Lumbiganon P. The global epidemiology of preterm birth. Best Pract Res Clin Obstet Gynaecol. 2018;52:3-12.
3. Preterm birth: World Health Organization.; 2023 [Available from: https://www.who.int/en/news-room/fact-sheets/detail/preterm-birth.
4. Vakilian K, Ranjbaran M, Khorsandi M, Sharafkhani N, Khodadost M. Prevalence of preterm labor in Iran: A systematic review and meta-analysis. Int J Reprod Biomed. 2015;13(12):743-8.
5. van Zijl MD, Koullali B, Mol BW, Pajkrt E, Oudijk MA. Prevention of preterm delivery: current challenges and future prospects. Int J Womens Health. 2016;8:633-45.
6. Goldenberg RL, Culhane JF, Iams JD, Romero R. Epidemiology and causes of preterm birth. Lancet. 2008;371(9606):75-84.
7. Simmons LE, Rubens CE, Darmstadt GL, Gravett MG. Preventing preterm birth and neonatal mortality: exploring the epidemiology, causes, and interventions. Semin Perinatol. 2010;34(6):408-15.
8. Hadar E, Biron-Shental T, Gavish O, Raban O, Yogev Y. A comparison between electrical uterine monitor, tocodynamometer and intra uterine pressure catheter for uterine activity in labor. J Matern Fetal Neonatal Med. 2015;28(12):1367-74.
9. Hassan M, Terrien J, Muszynski C, Alexandersson A, Marque C, Karlsson B. Better Pregnancy Monitoring Using Nonlinear Correlation Analysis of External Uterine Electromyography.  IEEE T Bio-Med Eng Journal. 2013;60(4):1160-6.
10. Vasak B, Graatsma EM, Hekman-Drost E, Eijkemans MJ, van Leeuwen JH, Visser GH, et al. Uterine electromyography for identification of first-stage labor arrest in term nulliparous women with spontaneous onset of labor. Am J Obstet Gynecol. 2013;209(3):232.e1-8.
11. Alamedine D, Khalil M, Marque C. Comparison of Different EHG Feature Selection Methods for the Detection of Preterm Labor. Comput Math Methods Med. 2013;2013:485684.
12. Boots AB, Sanchez-Ramos L, Bowers DM, Kaunitz AM, Zamora J, Schlattmann P. The short-term prediction of preterm birth: a systematic review and diagnostic metaanalysis. Am J Obstet Gynecol. 2014; 210(1):54.e1-.e10.
13. Kalchbrenner MA. Clinical review of home uterine activity monitoring (HUAM). J Am Osteopath Assoc. 2001;101(2): 18-24.
14. Lawn JE, Cousens S, Zupan J. 4 million neonatal deaths: when? Where? Why? Lancet. 2005;365(9462):891-900.
15. Vidhya CM, Maithani Y, Singh JP. Recent Advances and Challenges in Textile Electrodes for Wearable Biopotential Signal Monitoring: A Comprehensive Review. Biosensors [Internet]. 2023; 13(7).
16. Cai Y, Wang Z, Goyal D. 22 - Applications of terahertz technology in the semiconductor industry. In: Saeedkia D, editor. Handbook of Terahertz Technology for Imaging, Sensing and Communications: Woodhead Publishing; 2013: p. 624-40.
17. Patel BN, Shah DN. Evaluating ECG Capturing Using Sound-Card of PC/Laptop. International Journal of Instrumentation and Control Systems (IJICS). 2014;14(1).
18. Lancaster D. Active-Filter Cookbook: Howard W. Sams and Co; 1975.
19. Antoniou A. Digital Filters: Analysis, Design and Applications: McGraw-Hill College; 1993:689.
20. Devedeux D, Marque C, Mansour S, Germain G, Duchêne J. Uterine electromyography: A critical review. Am J Obstet Gynecol. 1993;169(6):1636-53.
21. Pantoli L, Stornelli V, Leuzzi G, Li H, Hu Z. Low-Current Design of GaAs Active Inductor for Active Filters Applications. Electronics [Internet]. 2020; 9(8).
22. Sallen RP, Key EL. A practical method of designing RC active filters. IRE Transactions on Circuit Theory. 1955;2(1):74-85.
23. Bland JM, Altman DG. Measurement error proportional to the mean. Bmj. 1996;313(7049):106.
24. Muszynski C, Happillon T, Azudin K, Tylcz JB, Istrate D, Marque C. Automated electrohysterographic detection of uterine contractions for monitoring of pregnancy: feasibility and prospects. BMC Pregnancy & Childbirth. 2018;18(1):136.
25. de Lau H, Rabotti C, Bijloo R, Rooijakkers MJ, Mischi M, Oei SG. Automated conduction velocity analysis in the electrohysterogram for prediction of imminent delivery: a preliminary study. Comput Math Methods Med. 2013;2013:627976.
26. Eleftheriades M, Pervanidou P, Chrousos GP. Fetal Stress. In: Fink G, editor. Encyclopedia of Stress (Second Edition). New York: Academic Press; 2007: p. 46-51.
27. Thijssen K, Vlemminx M, Westerhuis M, Dieleman J, van der Hout B, Oei G. Uterine Monitoring Techniques from Patients’ and Users’ Perspectives. AJP Rep. 2018;08:e184-e91.
28. ACOG Practice Bulletin Number 49, December 2003: Dystocia and augmentation of labor. Obstet Gynecol. 2003;102(6):1445-54
29. Harper LM, Shanks AL, Tuuli MG, Roehl KA, Cahill AG. The risks and benefits of internal monitors in laboring patients. Am J Obstet Gynecol. 2013;209(1):38.e1-6.
30. Marque CK, Terrien J, Rihana S, Germain G. Preterm labour detection by use of a biophysical marker: the uterine electrical activity. BMC Pregnancy & Childbirth. 2007;7(1):S5.
31. Leman H, Marque C, Gondry J. Use of the electrohysterogram signal for characterization of contractions during pregnancy. IEEE Trans Biomed Eng. 1999;10(46):1222-9.
32. Cohen W, Hayes-Gill B, Hassan S, Mirza F, Ommani S, Solomon M, et al. Accuracy and Reliability of Uterine Contraction Identification Using Abdominal Surface Electrodes. Clin Med Insights Womens Health. 2012;5:65.
33. de Lau H, Rabotti C, Oosterbaan HP, Mischi M, Oei GS. Study protocol: PoPE-Prediction of Preterm delivery by Electrohysterography. BMC Pregnancy & Childbirth. 2014;14(1):192.
34. Hassan M, Boudaoud S, Terrien J, Karlsson B, Marque C. Combination of canonical correlation analysis and empirical mode decomposition applied to denoising the labor electrohysterogram. IEEE Trans Biomed Eng. 2011;58(9):2441-7.
35. Altini M, Rooijakkers M, Rossetti E, Penders J, Dreesen P, Mariën H, et al. 785: Early labour detection in laboratory and free-living conditions using combined electrohysterography and heart rate data. Am J Obstet Gynecol. 2019;220(1): 513-4.
36. Mhajna M, Schwartz N, Levit-Rosen L, Warsof S, Lipschuetz M, Jakobs M, et al. Wireless, remote solution for home fetal and maternal heart rate monitoring. Am J Obstet Gynecol MFM. 2020;2(2):100101.
37. Wacker-Gussmann A, Plankl C, Sewald M, Schneider K-TM, Oberhoffer R, Lobmaier SM. Fetal cardiac time intervals in healthy pregnancies–an observational study by fetal ECG (Monica Healthcare System). J. Perinat. Med. 2018;46(6):587-92.