aDepartment of Pharmacy Practice, Faculty of Pharmacy, Helwan University, Cairo, Egypt

bUNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina, USA

Correspondence to Gauri G. Rao, PharmD, MS, UNC Eshelman School of Pharmacy: University of North Carolina at Chapel Hill, Eshelman School of Pharmacy, Chapel Hill, NC 27599-7569, USA. Tel: +1 919 966 9363; e-mail: [email protected]