Werker GR, Bansback N, Anis AH. Optimal timing of influenza vaccination in patients with human immunodeficiency virus: A Markov cohort model based on serial study participant hemoagglutination inhibition titers.

Werker GR, Sharif B, Sun H, Cooper C, Bansback N, Anis AH. Optimal timing of influenza vaccination in patients with human immunodeficiency virus: A Markov cohort model based on serial study participant hemoagglutination inhibition titers. Vaccine. 2014 Feb 3;32(6):677-84. doi: 10.1016/j.vaccine.2013.11.103. Epub 2013 Dec 16. PMID 24355089.