Who discoverd Pyloric Stenosis?  When did they discover it?

The Danish physician Harald Hirschsprung gets the credit:

"As a result of post-mortem examinations on two infants who had died
from the disease, hypertrophic pyloric stenosis was first described by
Harald Hirschsprung in 1888."

Surgical Tutor 
http://www.surgical-tutor.org.uk/default-home.htm?surgeons/ramstedt.htm

"1888
 Hirschsprung
 First description of pyloric stenosis" 
 
Timeline of Neonatology
http://www.neonatology.org/tour/timeline.html

Google search strategy:

Google Web Search: "pyloric stenosis" "first * by"
://www.google.com/search?hl=en&ie=UTF-8&q=%22pyloric+stenosis%22+%22first+*+by%22

Google Web Search: "pyloric stenosis" hirschsprung 1888
://www.google.com/search?hl=en&ie=UTF-8&q=%22pyloric+stenosis%22+hirschsprung+1888

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pinkfreud