| Table of contents Horiz. sanitario vol.20 n.1 Villahermosa Jan./Apr. 2021 Editorial | | | | · Quality Assessment in Health Units in Mexico Ramírez, Javier Mancilla
| | | Review papers | | | | · Barriers to access to health services for transgender women Martínez Vargas, Liliane; Arredondo López, Abel Armando
| | | | · Attitude and perception towards obesity in adolescents Catalán Gómez, Carlos Alberto; Guevara Valtier, Milton Carlos; Cárdenas Villareal, Velia Margarita; Paz Morales, María de los Ángeles; Soltero Rivera, Silvia Guadalupe
| | | | · Effectiveness of physical exercise interventions in adolescents with hypertension and obesity: systematic review Cruz Bernabé, Enrique Jair de la; Ramos Jiménez, Arnulfo; Cárdenas Villarreal, Velia Margarita
| | | Original articles | | | | · Legal norms for the reduction of cigarette consumption Cuba Suárez Lugo, Nery
| | | | · Adverse reactions to low frequency drugs in Matanzas, Cuba 2014-2018 Santos Muñoz, Leidy; García Milián, Ana Julia; Sánchez Pérez, Diriana; Laguardia Aldama, Dania
| | | | · Environmental sanitation and inequities in health in Costa Rica Chamizo García, Horacio Alejandro
| | | | · Validation of the Videogame Dependence Test in a sample of Mexican adolescents Sánchez Domínguez, Juan Pablo; Telumbre Terrero, Juan Yovani; Castillo Arcos, Lubia del Carmen; Silveira Sosa, Eric Alexander
| | | | · Cemeteries and bodies in epidemic crisis in Guadalajara, Jalisco. México Valle Barbosa, María Ana; Robles Bañuelos, José Raúl; Muñoz de la Torre, Armando; Carrillo Núñez, Gabriela Guadalupe; Vargas Valle, Irvin Abisai
| | | | · Sensory function and cognition in older adults with chronic disease Salazar Barajas, Martha Elba; Herrera Herrera, Jorge Luis; Ruiz Cerino, Juana María; Guerra Ordoñez, Jesús Alejandro; Duran Badillo, Tirso
| | | | · Against tobacco advertising and attitudes towardstobacco use in adolescents Guzmán-Facundo, Francisco Rafael; Ángel-García, Julia Elena Del; Candia-Arredondo, Josefina Saraí; Mendez-Ruiz, Martha Dalila; Villegas-Pantoja, Miguel Ángel
| | | | · Buying behavior in the time of Covid-19: Latin-American cross-sectional study from a healthcare marketing approach Larios-Gómez, Emigdio
| | | | · Psychosocial risk factors and mental health in workers of a textile company Vargas Jaimes, Claudia; Bernáldez Jaimes, Germán Benito; Gil Gómez, Ulises
| | | | · Food Addiction and Cravings in Preschoolers Residents Recognized by Their Caregivers Flores Peña, Yolanda; Un Espinosa, Akari S.; Ávila Alpirez, Hermelinda; Gutiérrez Valverde, Juana M.; Paz Morales, María de los Ángeles
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