“…Occurrence of physical phenomena (precipitation, turbidity, macroscopically visible crystal growth, odour generation, phase separation, flocculation or caking) was checked. A detailed protocol is described by Ferreira et al 36 Samples were withdrawn at 0 (baseline), 7, 14, 30, 60 and 90 days (T=0, 7, 14, 30, 60 or 90) and assayed six times at each time point.…”