Phyllis Margery Anderson (1901–1957), Australian pathologist Virginia Apgar (1909–1974) American obstetrical anesthesiologist (inventor of the Apgar score) Anna Baetjer (1899 –1984), American physiologist and toxicologist Roberta Bondar (1945-), Canadian, space medicine Dorothy Lavinia Brown (1919–2004), American surgeon Audrey Cahn (1905–2008), Australian nutritionist and microbiologist Margaret Chan (1947–), Chinese-Canadian health administrator; director of the World Health Organization