-based therapies. CONCLUSIONS This review paper will provide an overview of all technologies available in the area and inspect the current IoT applications in cell-based therapies to identify the benefits, challenges, and future directions of using IoT to allow safe and cost-effective delivery of cell-based therapies. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID) PRR1-10.2196/16935. ©Ching Lam, Michelle Helena van Velthoven, Edward Meinert. Originally published in JMIR Research Protocols (http//www.researchprotocols.org), 31.03.2020.BACKGROUND There is a critical need for effective health education methods for adolescent smoking prevention. The coproduction of antismoking videos shows promising results for adolescent health education. OBJECTIVE This study explored the feasibility of a smoking prevention program using the coproduction of antismoking videos in order to empower adolescents in smoking prevention and tobacco control. A smoking prevention program based on coproduction of antismoking videos over eight sessions was implemented in a low-income neighborhood. METHODS A mixed methods design with a concurrent embedded approach was used. In total, 23 adolescents participated in the program. During the prevention program, small groups of participants used video cameras and laptops to produce video clips containing antismoking messages. Quantitative data were analyzed using the Wilcoxon signed-rank test to examine changes in participants' psychological empowerment levels between pre- and postintervention; qualitative interview data were analyzed using content analysis. RESULTS Pre- and postcomparison data revealed that participants' psychological empowerment levels were significantly enhanced for all three domains-intrapersonal, interactional, and behavioral-of psychological empowerment (P less then .05). Interviews confirmed that the coproduction of antismoking videos is feasible in empowering participants, by supporting nonsmoking behaviors and providing them with an opportunity to help build a smoke-free community. CONCLUSIONS Both quantitative and qualitative data supported the feasibility of the coproduction of antismoking videos in empowering adolescents in smoking prevention. Coproduction of antismoking videos with adolescents was a beneficial health education method. selleck chemicals ©Eunhee Park, Yu-Ping Chang. Originally published in JMIR Pediatrics and Parenting (http//pediatrics.jmir.org), 31.03.2020.BACKGROUND Laboratory staff handling blood or biological samples are at risk for accidental injury or exposure to blood-borne pathogens. Hepatitis B virus (HBV) vaccinations for laboratory staff can minimize these risks. OBJECTIVE The aims of this study were to determine the prevalence of occupational exposure to needle stick injuries (NSIs) and assess HBV vaccination coverage among clinical laboratory staff in Sana'a, Yemen. METHODS A cross-sectional survey was conducted among clinical laboratory staff who were involved in handling and processing laboratory samples at the main public and private clinical laboratories in Sana'a. Data collection was done using a semistructured questionnaire. The questionnaire was divided into 3 parts. Part 1 included information on sociodemographic characteristics of participants. Part 2 included information on the availability of the personal protective equipment in the laboratories, such as lab coats and gloves. Part 3 included questions about the history of injury during wohat all laboratory staff are at risk of exposure to HBV. Therefore, strengthening supervision, legalizing HBV vaccinations for all laboratory staff, and optimizing laboratory practices regarding the management of sharps can minimize risks and prerequisites in Yemen. ©Nabil Saleh Al-Abhar, Ghuzlan Saeed Moghram, Eshrak Abdulmalek Al-Gunaid, Abdulwahed Al Serouri, Yousef Khader. Originally published in JMIR Public Health and Surveillance (http//publichealth.jmir.org), 31.03.2020.BACKGROUND Emotional eating (EE) is one of the most significant symptoms of various eating disorders. It has been difficult to collect a large amount of behavioral data on EE; therefore, only partial studies of this symptom have been conducted. To provide adequate support for online social media users with symptoms of EE, we must understand their behavior patterns to design a sophisticated personalized support system (PSS). OBJECTIVE This study aimed to analyze the behavior patterns of emotional eaters as the first step to designing a personalized intervention system. METHODS The machine learning (ML) framework and Latent Dirichlet Allocation (LDA) topic modeling tool were used to collect and analyze behavioral data on EE. Data from a subcommunity of Reddit, /r/loseit, were analyzed. This dataset included all posts and feedback from July 2014 to May 2018, comprising 185,950 posts and 3,528,107 comments. In addition, deleted and improperly collected data were eliminated. Stochastic gradient descent-based ML clor patterns of social website users with EE behaviors. We discovered the possibility of the LDA topic model as an exploratory user study method for abnormal behaviors in medical research. We also investigated the possibilities of ML- and topic modeling-based classifiers to automatically categorize text-based behavioral data, which could be applied to personalized medicine in future research. ©Youjin Hwang, Hyung Jun Kim, Hyung Jin Choi, Joonhwan Lee. Originally published in the Journal of Medical Internet Research (http//www.jmir.org), 31.03.2020.BACKGROUND Although preference research finds its origins in consumer research, preference elicitation methods have increasingly attracted attention in different decision-making contexts in health care. Simulating real-life decision making is believed to be important during consumer preference elicitation. OBJECTIVE The aims of this study were to compare the process of decision making between patients and consumers and to identify methods from the consumer research field that could be applied in patient preference elicitation. METHODS A narrative literature review was performed to identify preference elicitation concepts from a consumer context that could offer improvements in health care. RESULTS The process of decision making between patients and consumers was highly comparable. The following five concepts from the consumer research field that could effectively simulate a real-life decision-making process for applications in health care were identified simulating alternatives, self-reflection, feedback-driven exploration, separated (adaptive) dual response, and arranging profiles in blocks.