Unusual occurrence of spontaneous haematomas in three asymptomatic HIV-infected haemophilia patients a few days after the onset of ritonavir treatment. - Ginsburg, C; Salmon-Ceron, D; Vassilief, D; Rabian, C; Rotschild, C; Fontenay-Roupie, M; Stieltjes, N; Sicard, D (AIDS, 1998)