841 IS THERE A DIFFERENCE IN OUTCOMES BETWEEN ANTERIOR AND POSTERIOR PERORAL ENDOSCOPIC MYOTOMY (POEM)? A RANDOMIZED STUDY FROM AN EXPERIENCED HIGH-VOLUME OPERATOR
2018 ◽
Vol 87
(6)
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pp. AB121-AB122
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Keyword(s):
2013 ◽
Vol 108
◽
pp. S602
2013 ◽
Vol 77
(5)
◽
pp. AB153-AB154
◽
2019 ◽
Keyword(s):