"Pakistan's Mother Theresa"
Dr Ruth Pfau is a tiny, grey haired, elderly German nun who made it her life's mission to help leprosy sufferers in Pakistan.
Thanks to her work, some have even called her Pakistan's Mother Theresa.
Now 81 years old, she ended up in Pakistan over 50 years ago while she was waiting for a visa.
When she saw the devastating effects of leprosy she made up her mind to stay, and now her organisation offers treatment in over 150 leprosy clinics all across Pakistan.
Her efforts paid off in 1996 when leprosy was finally deemed to be under control in the country.
Nonetheless, Dr Pfau continues to work tirelessly, and has recently been helping the forgotten victims of the floods in the country - those who remain homeless and in need of food and shelter.
The 大象传媒's Mark Lobel travelled to Sindh province in Southern Pakistan to join Ruth Pfau on her latest rescue mission, and to find out more about her life and work.