Ludmir, Abraham, Luis Távara, Alfredo Larrañaga, Ricardo Sánchez, Luis Vega, Delia Moreno, and Roberto Redhead. 1984. “Contracepción En Adolescentes”. ACTA MEDICA PERUANA 11 (2), 55-58. https://amp.cmp.org.pe/index.php/AMP/article/view/1628.