Pamela Strallen visited Korea as a British nurse as a nursing missionary to the United Presbyterian Church in the U.S.A. When Strallen visited Korea, there were about 200,000 war orphans in Korea. Dongsan Christian Hospital completed the construction of a children's hospital in October 1953 and treated war orphans for free.

Director Howard Moffett visited Korea in 1957 when the Letkemann nurses were empty, and invited Strallen, a nurse who was working at the Masan Tuberculosis Sanitarium, and moved to Dongsan Christian Hospital in Daegu in 1961.

Along with Katherine Cowan, Strallen organized an orphanage tour mission for children in orphanages who could not be treated after being admitted to a children's hospital, and toured orphanages in and around Daegu to treat and volunteer. In addition, she was interested in and actively participated in the treatment of the leprosy patients of the Aerakwon.

Pamela Strallen, working at Children's Hospital