| MCh | Master of Surgery [Lat. Magister Chirurgiae]; methacholine |
|---|---|
| MChD | Master of Dental Surgery |
| MChir | Master in Surgery [Lat. Magister Chirurgiae] |
| MChOrth | Master of Orthopaedic Surgery |
| MDS | Master of Dental Surgery; maternal deprivation syndrome; medical data screening; medical data system... |