?:authorAffiliation
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[\'General Surgery Department, Centro Médico Nacional de Occidente, Instituto Mexicano del Seguro Social, Jalisco.\', \'General Surgery Department, Regional General Hospital 46, Instituto Mexicano del Seguro Social, Jalisco.\', \'Internal Medicine Department, Hospital Regional de León, Instituto de Seguridad y Servicios Sociales de los Trabajadores del Estado, Guanajuato.\', \'Ophthalmology Division, Specialty Tower, Hospital General \'Dr. Manuel Gea González\', Mexico City. Mexico.\']
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