Links:
[1] https://www.saludnl.gob.mx/drupal/sites/default/files/u249/27%20CONV%202017.doc
[2] https://www.saludnl.gob.mx/drupal/sites/default/files/u249/59%20SERVICIO%20DE%20LIMPIEZA.docx
[3] https://www.saludnl.gob.mx/drupal/sites/default/files/u249/SERV%20DE%20LIMP%20N59%20JA.pdf
[4] https://www.saludnl.gob.mx/drupal/sites/default/files/u249/SERV%20DE%20LIMP%20N59%20EP%20AT-001.pdf
[5] https://www.saludnl.gob.mx/drupal/sites/default/files/u249/SERV%20DE%20LIMP%20N59%20FT.pdf
[6] https://www.saludnl.gob.mx/drupal/sites/default/files/u249/SERV%20DE%20LIMP%20N59%20AE.pdf
[7] https://www.saludnl.gob.mx/drupal/sites/default/files/u249/SERV%20DE%20LIMP%20N59%20FE.pdf