Painometry: Wearable and objective quantification system for acute postoperative pain by Truong, H, Bui, N, Raghebi, Z, Ceko, M, Pham, N, Nguyen, P, Nguyen, A, Kim, T, Siegfried, K, Stene, E, Tvrdy, T, Weinman, L, Payne, T, Burke, D, Dinh, T, D'Mello, S, Banaei-Kashani, F, Wager, T, Goldstein, P, Vu, T