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We present details on the observing strategy, data-processing techniques, and spectroscopic targeting algorithms for the first three years of operation for the Dark Energy Survey Supernova Program (DES-SN). This five-year program using the Dark Energy Camera mounted on the 4 m Blanco telescope in Chile was designed to discover and follow supernovae (SNe) Ia over a wide redshift range (0.05 < z < 1.2) to measure the equation-of-state parameter of dark energy. We describe the SN program in full: Strategy, observations, data reduction, spectroscopic follow-up observations, and classification. From three seasons of data, we have discovered 12,015 likely SNe, 308 of which have been spectroscopically confirmed, including 251 SNe Ia over a redshift range of 0.017 < z < 0.85. We determine the effective spectroscopic selection function for our sample and use it to investigate the redshiftdependent bias on the distance moduli of SNe Ia we have classified. The data presented here are used for the first cosmology analysis by DES-SN ("DES-SN3YR"), the results of which are given in Dark Energy Survey Collaboration et al. The 489 spectra that are used to define the DES-SN3YR sample are publicly available at https://des.ncsa.illinois.edu/releases/sn.

This article reports a patient who had a total degloving of the hand, caused by a roller injury, up to the distal forearm level. The authors replanted the degloved skin using arteriovenous anastomosis of the radial artery at the wrist to the cephalic vein in the degloved skin in an end-to-side manner. To enhance the survival of the replanted skin, it was deepithelialized and buried in an abdominal pocket created specifically for this purpose. The replanted skin survived, except at the terminal portions of the fingers. The patient had reasonable fimction and cosrnesis after the wound healed. The procedure may be used for the treatment of this rare injury to salvage a cosmetically acceptable and functional hand.