Direct fluorescent antibody assay and polymerase chain reaction for the detection of Chlamydia trachomatis in patients with vernal keratoconjunctivitis . Clinics [Internet]. 2011 Jan. 1 [cited 2024 Jun. 15];66(12):2013-8. Available from: https://www.revistas.usp.br/clinics/article/view/19322