Context:  In 1955, DC Sinclair and G Weddell developed peripheral pattern theory, based on a 1934 suggestion by John Paul Nafe. They proposed that all skin fiber endings (with the exception of those innervating hair cells) are identical, and that pain is produced by intense stimulation of these fibers. Another 20th-century theory was gate control theory, introduced by Ronald Melzack and Patrick Wall in the 1965 Science article "Pain Mechanisms: A New Theory". The authors proposed that both thin (pain) and large diameter (touch, pressure, vibration) nerve fibers carry information from the site of injury to two destinations in the dorsal horn of the spinal cord, and that the more large fiber activity relative to thin fiber activity at the inhibitory cell, the less pain is felt. Both peripheral pattern theory and gate control theory have been superseded by more modern theories of pain[citation needed].

Question: What year was peripheral pattern theory developed? 
Answer: 1955

Question: Whose suggestion prompted the development of peripheral pattern theory?
Answer: John Paul Nafe

Question: What did DC Sinclair and G Weddell propose a property of all skin fiber endings is?
Answer: identical

Question: What does the gate control theory specify the diameter of which is responsible for the amount of pain sensation?
Answer: nerve fibers

Question: Why were peripheral pattern theory and gate control theory left behind?
Answer: superseded by more modern theories of pain

Question: What did DC Sinclair develop in 1934?
Answer: Unanswerable

Question: What did DC Weddell and G Sinclair develop? 
Answer: Unanswerable

Question: What is the 1934 peripheral pattern theory based on?
Answer: Unanswerable

Question: What article was introduced in 1956?
Answer: Unanswerable

Question: What did Ronald Wall and Patrick Melzack introduce?
Answer: Unanswerable