Diagnosis of Black Queen Cell Virus, Deformed Wing Virus and Acute Bee Paralysis Virus in Symptomatic African Honey Bees (Apis Mellifera Scutellata) of Costa Rica Using RT-PCR in Real Time. Ciencias Veterinarias 2016, 34 (1), 7-21. https://doi.org/10.15359/rcv.34-1.1.