Performance of MALDI–TOF mass spectrometry in the Philippines by Osa, M, Belo, MC, Dela Merced, Z, Villanueva, AMG, Mauhay, J, Celis, A, Catli, M, Suzuki, S, Ukawa, T, Tamaki, S, Dhoubhadel, BG, Ariyoshi, K, Telan, EFO, Umipig, DV, Parry, CM, Saito, N, Smith, C