Mobile applications, hemoglobin, photo, cloud, analysis, color scale, World Health Organization
 K. Avila, P. Sanmartín, D. Jabba, and M. Jimeno, “Applications based on service-oriented architecture (SOA) in the field of home healthcare,” Sensors, vol. 17, no. 8, Jul. 2017. doi: 10.3390/s17081703.
 P. Prasanna, S. Jain, N. Bhagat, and A. Madabhushi, “Decision support system for detection of diabetic retinopathy using smartphones,” in 7th Int. Conf. Pervasive Comput. Technol. Healthcare (PervasiveHealth), 2013, pp. 176–179. doi: 10.4108/icst.pervasivehealth.2013.252093
 World Health Organization (WHO), “Anaemia prevention and control.” [Online]. Available: http://www.who.int/medical_devices/initiatives/anaemia_control/en/. Accessed: Jul. 12, 2017.
 World Health Organization (WHO), “Global Targets 2025.” [Online]. Available: http://www.who.int/nutrition/global-target-2025/en/. Accessed: Jul. 12, 2017.
 G. Santra, “Usefulness of examination of palmar creases for assessing severity of anemia in Indian perspective: A study from a tertiary care center,” Int. J. Med. Public Health, vol. 5, no. 2, pp. 169–172, 2015. doi:10.4103/2230-8598.153830
 M. Dobson, “World Health Organization Hemoglobin colour scale: A practical answer to a vital need,” Anesthesia, 2002. Available: https://www.wfsahq.org/components/com_virtual_library/media/3a1289265bf7234b6eba0e7e954ae0db-a1cef5cc0b4b05c6fa20ca15985b6c5f-WHO---Haemoglobin-Colour-Scale--Update-15-2002-.pdf
 M. R. Kumar, M. Mahadevappa, and D. Goswami, “Low cost point of care estimation of Hemoglobin levels,” in Int. Conf. Med. Imag. m-Health Emerg. Commun. Syst. (MedCom), 2014, pp. 216–221. doi:10.1109/MedCom.2014.7006007
 J. Critchley and I. Bates, “Haemoglobin colour scale for anaemia diagnosis where there is no laboratory: A systematic review,” Int. J. Epidemiol., vol. 34, no. 6, pp. 1425–1434, 2005. https://doi.org/10.1093/ije/dyi195
 World Health Organization (WHO), “Micronutrient deficiencies.” [Online]. Available: http://www.who.int/nutrition/topics/ida/en/. Accessed: Jul. 12, 2017.
 C. Aldridge, H. M. Foster, M. Albonico, S. M. Ame, and A. Montresor, “Evaluation of the diagnostic accuracy of the Haemoglobin Colour Scale to detect anaemia in young children attending primary healthcare clinics in Zanzibar,” Trop. Med. Int. Health, vol. 17, no. 4, pp. 423–429, 2012. doi: 10.1111/j.1365-3156.2011.02944.x
 D. A. Nardone, K. M. Roth, D. J. Mazur, and J. H. McAfee, “Usefulness of physical examination in detecting the presence or absence of anemia,” Arch. Intern. Med., vol. 150, no. 1, pp. 201–204, 1990. doi: 10.1001/archinte.1990.00390200148036
 J. R. Zucker, B. A. Perkins, H. Jafari, J. Otieno, C. Obonyo, and C. C. Campbell, “Clinical signs for the recognition of children with moderate or severe anaemia in western Kenya,” Bull. World Health Organ., vol. 75, suppl 1, pp. 97–102, 1997. Available: https://www.researchgate.net/publication/51322167_Clinical_signs_for_the_recognition_of_children_with_moderate_or_severe_anaemia_in_western_Kenya
 C. D. Hanning and J. M. Alexander-Williams, “Pulse oximetry: A practical review,” BMJ, vol. 311, no. 7001, pp. 367–370, 1995. doi: 10.1136/bmj.311.7001.367
 J. F. Kelleher, “Pulse oximetry,” J. Clin. Monit., vol. 5, no. 1, pp. 37–62, 1989. Available: https://doi.org/10.1007/BF01618369s
 O. Wieben, “Light absorbance in pulse oximetry,” in Design of Pulse Oximeters, G. W. Webster, Ed. New York, NY, USA: CRC Press, 1997, pp. 53–68.
 D. C. Harris, “Fundamentals of Spectrophotometry,” in Quantitative Chemical Analysis, 8a ed., vol. 1, China Lake, CA: Macmillan, 2010, pp. 393–414.
 L. Lamhaut, R. Apriotesei, X. Combes, M. Lejay, P. Carli, and B. Vivien, “Comparison of the accuracy of noninvasive hemoglobin monitoring by spectrophotometry (SpHb) and HemoCue® with automated laboratory hemoglobin measurement,” J. Am. Soc. Anesthesiol., vol. 115, no. 3, pp. 548–554, 2011. doi: 10.1097/ALN.0b013e3182270c22
 E. J. Van Kampen and W. G. Zijlstra, “Spectrophotometry of hemoglobin and hemoglobin derivatives,” Adv. Clin. Chem., vol. 23, pp. 199–257, 1983. https://doi.org/10.1016/S0065-2423(08)60401-1
 A. R. Kent, S. H. Elsing, and R. L. Hebert, “Conjunctival vasculature in the assessment of anemia,” Ophthalmology, vol. 107, no. 2, pp. 274–277, 2000. doi: 10.1016/S0161-6420(99)00048-2
 K. Yurdakök, Ş. N. Güner, y S. S. Yalçın, “Validity of using pallor to detect children with mild anemia”, Pediatr. Int., vol. 50, núm. 2, pp. 232–234, 2008.
 A. Kalantri, M. Karambelkar, R. Joshi, S. Kalantri, and U. Jajoo, “Accuracy and reliability of pallor for detecting anaemia: A hospital-based diagnostic accuracy study,” PLoS One, vol. 5, no. 1, p. e8545, 2010. doi: 10.1371/journal.pone.0008545
 N. Sinha, P. R. Deshmukh, and B. S. Garg, “Evaluation of WHO haemoglobin colour scale & palmar pallor for screening of anaemia among children (6-35 months) in rural Wardha, India,” Indian J. Med. Res., vol. 128, no. 3, pp. 278–281, 2008. Available: https://www.researchgate.net/publication/23567282_Evaluation_of_WHO_haemoglobin_colour_scale_palmar_pallor_for_screening_of_anaemia_among_children_6-35_months_in_rural_Wardha_India
 S. Suner, G. Crawford, J. McMurdy, and G. Jay, “Non-invasive determination of hemoglobin by digital photography of palpebral conjunctiva,” J. Emerg. Med., vol. 33, no. 2, pp. 105–111, 2007. doi: 10.1016/j.jemermed.2007.02.011
 M. R. Kumar, H. Misra, S. Hiwale, and M. Ramachandra, “Digital WHO hemoglobin color scale: Analysis and performance,” in Sixth Int. Conf. EHealth, Telemed. Social Med., Barcelona, Spain, 2014, pp. 53–58.
 H. Ranganathan and N. Gunasekaran, “Simple method for estimation of hemoglobin in human blood using color analysis,” IEEE Trans. Inf. Technol. Biomed., vol. 10, no. 4, pp. 657–662, 2006. doi: 10.1109/TITB.2006.874195
 E. J. Wang, W. Li, D. Hawkins, T. Gernsheimer, C. Norby-Slycord, and S. N. Patel, “HemaApp: Noninvasive blood screening of hemoglobin using smartphone cameras,” in Proc. 2016 ACM Int. Joint Conf. Pervasive Ubiquitous Comput., New York, NY, USA, 2016, pp. 593–604.
 M. Fairchild, Color Appearance Models, 2nd ed. UK: John Wiley & Sons, 2013. Available: http://last.hit.bme.hu/download/firtha/video/Colorimetry/Fairchild_M._Color_appearance_models__2005.pdf
 D. Malacara, Color Vision and Colorimetry: Theory and Applications, 2nd ed. Bellingham, WA: SPIE Press, 2011.
 M. R. Desai, P. Phillips-Howard, D. Terlouw, and K. Wannemuehler, “Recognition of pallor associated with severe anaemia by primary caregivers in western Kenya,” Trop. Med. Int. Health, vol. 7, no. 10, pp. 831–839, 2002. doi: 10.1046/j.1365-3156.2002.00942.x
 Y. Ohya, T. Obi, M. Yamaguchi, N. Ohyama, and Y. Komiya, “Natural color reproduction of human skin for telemedicine,” in Proc. SPIE, Med. Imag. 98: Image Display, vol. 3335, 1998. Available: https://doi.org/10.1117/12.312499
 P. Kay and L. Maffi, “Color appearance and the emergence and evolution of basic color lexicons,” Am. Anthropol., vol. 101, no. 4, pp. 743–760, Dec. 1999. Available: https://doi.org/10.1525/aa.19220.127.116.113
This work is licensed under a Creative Commons Attribution 4.0 International License.
This journal is registered under a Creative Commons Attribution 4.0 International Public License. Thus, this work may be reproduced, distributed, and publicly shared in digital format, as long as the names of the authors and Pontificia Universidad Javeriana are acknowledged. Others are allowed to quote, adapt, transform, auto-archive, republish, and create based on this material, for any purpose (even commercial ones), provided the authorship is duly acknowledged, a link to the original work is provided, and it is specified if changes have been made. Pontificia Universidad Javeriana does not hold the rights of published works and the authors are solely responsible for the contents of their works; they keep the moral, intellectual, privacy, and publicity rights.
Approving the intervention of the work (review, copy-editing, translation, layout) and the following outreach, are granted through an use license and not through an assignment of rights. This means the journal and Pontificia Universidad Javeriana cannot be held responsible for any ethical malpractice by the authors. As a consequence of the protection granted by the use license, the journal is not required to publish recantations or modify information already published, unless the errata stems from the editorial management process. Publishing contents in this journal does not generate royalties for contributors.