| Table of contents Horiz. Med. vol.23 no.2 Lima Apr./Jun. 2023 Editorial | | | | · Professionalism and medical education Vojvodic-Hernández, Iván
| | | Original articles | | | | · The feeling of loneliness among the elderly population attending day care centers in Bogotá, Colombia Camargo-Rojas, Claudia Marcela; Chavarro-Carvajal, Diego Andrés
| | | | · Clinical and echocardiographic predictors of low cardiac output syndrome after heart valve surgery de la C. Granda Gámez, Yudeikis; Rosabal García, Yoandro; Copa Córdova, Lisanet
| | | | · Perceptions of online cooperative learning by health science students Chambi-Mescco, Edith; Calero Escurra, Ofelia Paola; De La Torre, Milagros Salazar; Mestanza Tejada, Maritza Yovany; Paucar Miranda, Pilar Julia; Ballarta Rodríguez, Laura Ysabel; Durand Veramatus, Miguel Alfredo; Segura Medina, Yolanda; Cordori Carpio, Janet; Sánchez Sandoval, Sara Pamela; Matos Carhuaricra, Melisa
| | | | · Functionality of lower limb with exposed bone using VAC® negative pressure wound therapy vs. medial calf flap Chau Ramos, Enrique Antonio
| | | | · Factors associated with fear of COVID-19 prior to returning to in-person classes at a Peruvian medical school Dextre-Vilchez, Sergio Armando; Tapia-Mayta, Alexandra Fabiola; Febres-Ramos, Richard Jeremy; Vásquez-Mercado, Rocío Paola; Mercado-Rey, Miguel Raúl
| | | | · Peripheral pharmaceutical intervention program for the prevention of iron deficiency anemia in children Alcalá Pimentel, María Antonieta; García Ramírez, Kattya Liliana; Ponce Pardo, John Eloy
| | | | · Hemoglobin as a predictor of hematocrit and red blood cell count according to age and sex in a population of Villa El Salvador, Lima, Peru Guevara Tirado, Alberto
| | | | · Level of knowledge of hypertension among teachers of a public educational institution, Lima provinces, 2021 Apaza Arzapalo, Diego Rolando; Salinas Quiñonez, Milagros Roxana; Pantoja Sánchez, Lilian R.
| | | Clinical cases | | | | · Giant hiatal hernia: a clinical case Cuevas Cisneros, Jimy Williams; Huamán Sayago, Stefanny Rocío; Mendoza Ccorimanya, Patricia Marisol; Mosqueira Oporto, Estefany; Incarroca Quispe, Qori Urpi; Jordán Saldaña, Dayant Hanna Andrea; Laurel Montesinos, Fernando; Lezama Quispe, Chaska; Virto Farfán, Hesed
| | | | · Orbitofrontal syndrome in an offender incarcerated for aggravated kidnapping, rape and death of a minor Salvatierra, Andreé; Del-Carmen-Sara, José
| | | | · Dropped appendicolith following an appendectomy Mendoza Rojas, Hubert James
| | | Review articles | | | | · Free radicals and antioxidant system Guija-Guerra, Henry; Guija-Poma, Emilio
| | | | · Nonalcoholic fatty liver disease in patients with type 2 diabetes: a review article Manrique, Gonzalo Miranda
| | | Letter to the editor | | | | · When reason is nourished by affections: reflections of young scientists on the challenges of science in Latin America Freire, Laísa Maria; Daza-Millone, Maria Antonieta; Becerra-Hernández, Lina Vanessa; Paredes-Moscosso, Solange R.
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