Hepatitis B revaccination for healthcare workers who are anti-HBs-negative after receiving a primary vaccination series - Lopes, Marta Heloisa; Sartori, Ana Marli Christovam; Souza, Tatiany Viviany Gonçalves; Mascheretti, Melissa; Chaves, Tânia do Socorro Souza (Revista da Sociedade Brasileira de Medicina Tropical, 2012)