2018-02-142018-02-141982-06-18http://hdl.handle.net/2152.3/5730This image reflects a letter written to C. Sanctuary, and copied to multiple individuals, by V. McCall regarding the Initial Marketing Phase of Esophageal pH Measurements.Esophageal pH MeasurementsMarketingC. SanctuaryV. McCallR.I. CherryDel Mar AvionicsBruce Del MarJack HammondBachmanTeschkeJohnsonWilliam ThorntonJohn WallaceSpace MedicineUTMBletterAmbulatoryBlood Pressure Monitor