V. Ricoca Peixoto, A. Vieira, P. Aguiar, C. Carvalho, D. Rhys Thomas, and A. Abrantes, “Initial Assessment of the Impact of the Emergency State Lockdown Measures on the 1st Wave of the COVID-19 Epidemic in Portugal”, Acta Med Port, vol. 33, no. 11, pp. 733–741, Nov. 2020.