Atallah Álvaro N, Arbache S. Would it be possible to have better ways and routes of administration for vaccines against COVID-19?. Sao Paulo Med J [Internet]. 2021 Jul. 1 [cited 2025 Jun. 16];139(4):416-7. Available from: https://periodicosapm.emnuvens.com.br/spmj/article/view/462