title: [The smoking habit in underdeveloped countries: an important public health problem].
authors.forename: J
authors.initials: J
authors.lastname: Ruiz
mesh_terms: D003906:Developing Countries; D006801:Humans; D011634:Public Health; D012907:Smoking / Q000331:legislation & jurisprudence*
vernacular_title: El hábito de fumar en países menos desarrollados: un importante problema de salud pública.