H. H. Youssef

Rifampin concentrations in cerebrospinal fluid of patients with tuberculous meningitis.

J. Sippel, N. Girgis, I. Mikhail, 2015, The American review of respiratory disease.

Airway resistance and peak expiratory flow-rate in smokers and non-smokers.

N. Zamel, F. Prime, H. H. Youssef, 1963, Lancet.