Schumock GT, Li EC, Suda KJ, Wiest MD, Stubbings J, Matusiak LM, Hunkler RJ, Vermeulen LC. National trends in prescription drug expenditures and projections for 2015. American Journal of Health-System Pharmacy. 2015, 72 (9): 717–36. PMID 25873620. doi:10.2146/ajhp140849.
Schumock GT, Li EC, Suda KJ, Wiest MD, Stubbings J, Matusiak LM, Hunkler RJ, Vermeulen LC. National trends in prescription drug expenditures and projections for 2015. American Journal of Health-System Pharmacy. 2015, 72 (9): 717–36. PMID 25873620. doi:10.2146/ajhp140849.