TY - JOUR AU - Lam, H G; Breumelhof, R; Roelofs, J M TI - What is the optimal time window in symptom analysis of 24-hour esophageal pressure and pH data? JO - Dig Dis Sci IS - 02 VL - 39 PY - 1994 DO - 10.1007/BF02090215 SP - 402 EP - 409 N1 - et al. ER -