1. Sheila Theodora Elsie Callender was a British physician and haematologist.

1. Sheila Theodora Elsie Callender was a British physician and haematologist.
Sheila Callender spent the majority of her career at Oxford University, and has been credited with helping to establish haematology as a distinct medical discipline.
Sheila Callender attended secondary school at the Godolphin School in Salisbury.
Sheila Callender attended the University of St Andrews from 1932, earning a BSc in 1935 and an MBChB in 1938.
Sheila Callender graduated with an MD in 1944 for her research on anaemia during pregnancy.
Sheila Callender began her career as a junior doctor at Dundee Royal Infirmary.
Sheila Callender worked at Oxford University from 1942 to 1946 as a house officer and research assistant.
Sheila Callender was made a Fellow of the Royal College of Physicians in 1962 and awarded a DSc by Oxford University in 1970.
Sheila Callender has been recognised as one of a group of physicians in the United Kingdom and North America who helped to establish haematology as a distinct discipline of medicine.
Sheila Callender studied some of the most common causes of anaemia: iron deficiency, vitamin B12 deficiency, and folate deficiency.
Sheila Callender worked with Rob Race to develop a new method for determining the lifespan of red blood cells, and helped Leslie Witts on early studies of chemotherapy regimens for treating leukaemia.
Sheila Callender married Ivan Gyula Arpad Monostori, a Hungarian refugee studying medicine at Oxford, in 1957; they lived together in Oxford and Scotland with "a collection of rather terrifying mastiffs".
Sheila Callender died from leukaemia on 17 August 2004 at John Radcliffe Hospital in Oxford.