Study of Pembrolizumab (MK-3475) Versus Placebo in Participants With Esophageal Carcinoma Who Are Receiving Chemotherapy and Radiation Therapy (MK-3475-975/KEYNOTE-975)

Taichung Veterans General Hospital-Radiation Oncology ( Site 0647), Taichung

Chang Gung Med Foundation. Kaohsiung Branch ( Site 0643), Kaohsiung City

St. Luke s Medical Center ( Site 0601), Quezon City

Orszagos Onkologiai Intezet ( Site 0263), Budapest

UCL Saint Luc ( Site 0162), Brussels

Rigshospitalet ( Site 0199), Copenhagen

Baguio General Hospital and Medical Center ( Site 0603), Baguio City

UZ Leuven ( Site 0161), Leuven

Debreceni Egyetem Klinikai Kozpont ( Site 0261), Debrecen

Odense Universitetshospital ( Site 0200), Odense

The Medical City-Iloilo ( Site 0602), Iloilo City

Bekes Megyei Kozponti Korhaz - Pandy Kalman Tagkorhaza ( Site 0262), Gyula

Cebu Doctors University Hospital ( Site 0604), Cebu City

Pecsi Tudomanyegyetem AOK ( Site 0265), Pécs

AZ Delta ( Site 0165), Roeselare

UZ Gent ( Site 0163), Ghent

National Taiwan University Hospital ( Site 0641), Taipei

Weill Cornell Medical College ( Site 0053), New York

National Cancer Center ( Site 0626), Goyang-si

Koo Foundation Sun Yat-Sen Cancer Center ( Site 0644), Taipei

Charite Campus Virchow Klinikum ( Site 0250), Berlin

SA Pohja-Eesti Regionaalhaigla ( Site 0201), Tallinn

Centre Francois Baclesse ( Site 0236), Caen

Detecta Clínica ( Site 0146), Surquillo

Hospital Nacional Arzobispo Loayza ( Site 0143), Lima

Clinica San Gabriel ( Site 0142), Lima

Allegheny Health Network ( Site 0042), Pittsburgh

IRCCS Policlinico San Donato ( Site 0295), San Donato Milanese

Fondazione IRCCS Istituto Nazionale dei Tumori di Milano ( Site 0292), Milan

Facharztzentrum Eppendorf ( Site 0242), Hamburg

Centre Georges Francois Leclerc ( Site 0223), Dijon

Greater Baltimore Medical Center ( Site 0031), Baltimore

ASST Papa Giovanni XXIII ( Site 0296), Bergamo

Azienda Socio Sanitaria Territoriale di Cremona ( Site 0299), Cremona

Fondazione IRCCS Policlinico San Matteo-Oncology ( Site 0300), Pavia

Columbus Regional Research Institute ( Site 0047), Columbus

Chang Gung Medical Foundation. Linkou ( Site 0642), Taoyuan District

Istanbul University Cerrahpasa Medical Faculty ( Site 0452), Istanbul

Göztepe Prof. Dr. Süleyman Yalçın Şehir Hastanesi-oncology ( Site 0451), Istanbul

Ege Universitesi Tip Fakultesi ( Site 0457), Izmir

IRCCS Istituto Oncologico Veneto ( Site 0298), Padua

Izmir Katip Celebi Universitesi Ataturk Egitim ve Arastirma Hastanesi ( Site 0458), Izmir

Thompson Cancer Survival Center ( Site 0696), Knoxville

China Medical University Hospital ( Site 0646), Taichung

CHU Hotel Dieu Nantes ( Site 0230), Nantes

Universitaetsklinikum Muenster ( Site 0248), Münster

Henry Ford Hospital ( Site 0685), Detroit

CENTRO HEMATO ONCOLOGICO PRIVADO-CHOP ( Site 0728), Toluca

SA Tartu Ulikooli Kliinikum ( Site 0202), Tartu

Universitaetsklinikum Koeln ( Site 0251), Cologne

University of Wisconsin Hospital and Clinics ( Site 0033), Madison

Institut De Cancerologie De Lorraine ( Site 0222), Vandœuvre-lès-Nancy

Universitaetsmedizin der Johannes Gutenberg-Universitaet Mainz ( Site 0247), Mainz

Azienda Ospedaliero Universitaria Pisana - Presidio Santa Chiara ( Site 0294), Pisa

Chonnam National University Hwasun Hospital ( Site 0625), Hwasun Gun

University of Missouri ( Site 0688), Columbia

University of Kansas Cancer Center ( Site 0023), Westwood

Cancer Center of Kansas ( Site 0058), Wichita

University Medical Center ( Site 0035), New Orleans

Marienhospital Stuttgart Vincenz von Paul Kliniken gGmbH ( Site 0253), Stuttgart

National Cheng Kung University Hospital ( Site 0645), Tainan City

Stephenson Cancer Center ( Site 0044), Oklahoma City

CHU Amiens Picardie Site Sud Amiens ( Site 0235), Amiens

Istituto Nazionale Tumori IRCCS Fondazione Pascale-SC Oncologia Clinica Sperimentale Addome ( Site 0, Napoli

Utah Cancer Specialists ( Site 0697), Salt Lake City

Institut Sainte Catherine ( Site 0228), Avignon

CHD Vendee ( Site 0227), La Roche-sur-Yon

CHU Limoges Hopital Dupuytren ( Site 0225), Limoges

Renown Regional Medical Center ( Site 0706), Reno

MemorialCare Health System - Long Beach Medical Center-Oncology ( Site 0691), Long Beach

Institut Curie - Centre Rene Huguenin ( Site 0237), Saint-Cloud

Oregon Health & Science University Center for Health & Healing 2- CHH2 ( Site 0060), Portland

Cancer Care Northwest - Spokane Valley ( Site 0036), Spokane Valley

Main Military Clinical Hospital n.a. N.N.Burdenko ( Site 0421), Moscow

FSAI Treatment and Rehabilitation Centre of the MoH and SD of RF ( Site 0429), Moscow

Pavlov First Saint Petersburg State Medical University ( Site 0426), Saint Petersburg

Medical institute named after Berezin Sergey ( Site 0417), Saint Petersburg

Shanghai Chest Hospital ( Site 0501), Shanghai

Shanghai Chest Hospital ( Site 0503), Shanghai

Zhongshan Hospital Fudan University ( Site 0502), Shanghai

S.C. Centrul de Oncologie Sf. Nectarie SRL ( Site 0394), Craiova

Jiangsu Cancer Hospital ( Site 0519), Nanjing

Affiliated Hospital of Jiangsu University ( Site 0524), Zhenjiang

The Affiliated Hospital of Xuzhou Medical University ( Site 0522), Xuzhou

Huai an First People s Hospital ( Site 0526), Huai'an

Anhui Provincial Hospital-Oncology Radiotherapy Department ( Site 0531), Hefei

Kaluga Regional Clinical Oncology Center ( Site 0424), Kaluga

Tianjin Medical University Cancer Institute & Hospital ( Site 0505), Tianjin

Hangzhou First People's Hospital ( Site 0530), Hangzhou

Sir Run Run Shaw Hospital ( Site 0523), Hangzhou

Zhejiang Cancer Hospital ( Site 0529), Hangzhou

Jiangxi Cancer Hospital ( Site 0512), Nanchang

The 900th Hospital of the Joint Logistics Support Force of the Chinese People's Liberation Army ( Si, Fuzhou

The First Affiliated Hospital of Xiamen University ( Site 0538), Xiamen

Institutul Oncologic Prof.Dr. Ion Chiricuta Cluj-Napoca ( Site 0392), Cluj-Napoca

S.C. Radiotherapy Center Cluj S.R.L ( Site 0391), Cluj-Napoca

Hunan Cancer Hospital ( Site 0515), Changsha

Republican Clinical Oncology Dispensary of Tatarstan MoH ( Site 0412), Kazan'

Hubei Cancer Hospital ( Site 0514), Wuhan

SBHI Samara Regional Clinical Oncology Dispensary ( Site 0420), Samara

GBUZ Republican Clinical Oncological Dispensary-Antitumor drug therapy department ( Site 0430), Ufa

Centrul Medical Topmed ( Site 0398), Târgu Mureş

Sichuan Cancer Hospital ( Site 0527), Chengdu

Sverdlovsk Regional Oncology Hospital ( Site 0411), Yekaterinburg

Ovidius Clinical Hospital OCH-Oncology and Hematology ( Site 0393), Ovidiu

National Cancer Center Hospital East ( Site 0562), Kashiwa

Hospital Regional de Concepcion ( Site 0105), Concepción

Centro Investigación del Cáncer James Lind ( Site 0106), Temuco

Centro de Investigacion y desarrollo Oncologico SpA - CIDO SpA ( Site 0103), Temuco

Centro de Cancer Nuestra Senora de la Esperanza ( Site 0104), Santiago

Dana Farber Cancer Center ( Site 0034), Boston

Rutgers Cancer Institute of New Jersey ( Site 0695), New Brunswick

Instituto Medico Alexander Fleming ( Site 0063), Buenos Aires

Fundacion Favaloro ( Site 0061), Ciudad de Buenos Aires

Hospital Municipal de Gastroenterologia Dr. Bonorino Udaondo ( Site 0066), Buenos Aires

CEMIC ( Site 0064), Buenos Aires

ONCOSITE - Centro de Pesquisa Clinica em Oncologia ( Site 0088), Ijuí

Hospital Nossa Senhora da Conceicao ( Site 0087), Porto Alegre

Clinica de Oncologia Reichow ( Site 0085), Blumenau

Instituto do Cancer do Estado de Sao Paulo - ICESP ( Site 0081), São Paulo

Cross Cancer Institute ( Site 0010), Edmonton

CancerCare Manitoba ( Site 0002), Winnipeg

The Ottawa Hospital - Cancer Care ( Site 0008), Ottawa

Sunnybrook Research Institute ( Site 0012), Toronto

Princess Margaret Cancer Centre ( Site 0011), Toronto

Centre Hospitalier de l Universite de Montreal - CHUM ( Site 0005), Montreal

Masarykuv onkologicky ustav-Klinika komplexni onkologicke pece ( Site 0721), Brno

Fakultni nemocnice Ostrava-Klinika onkologicka ( Site 0719), Ostrava

Fakultni nemocnice Olomouc-Onkologicka klinika ( Site 0720), Olomouc

Fakultni nemocnice v Motole-Onkologicka klinika 2. LF UK a FN Motol ( Site 0718), Prague

Institut Jean Godinot ( Site 0238), Reims

Centro de Investigaciones Clinicas de Latinoamerica S.A. - CELAN ( Site 0122), Guatemala City

Gastrosoluciones ( Site 0126), Guatemala City

Oncomedica ( Site 0125), Guatemala City

Grupo Medico Angeles ( Site 0121), Guatemala City

Medi-K Cayala ( Site 0124), Guatemala City

Centro Medico Integral De Cancerología (CEMIC) ( Site 0123), Quetzaltenango

Pamela Youde Nethersole Eastern Hospital ( Site 0543), Hong Kong

Princess Margaret Hospital. ( Site 0542), Hong Kong

Queen Mary Hospital ( Site 0541), Pokfulam

Policlinico Universitario A. Gemelli ( Site 0297), Roma

Aichi Cancer Center Hospital ( Site 0563), Nagoya

Kanagawa Cancer Center ( Site 0565), Yokohama

Saitama Cancer Center ( Site 0564), Kitaadachi-gun

Shizuoka Cancer Center Hospital and Research Institute ( Site 0566), Sunto-gun

National Cancer Center Hospital ( Site 0561), Tokyo

Cryptex Investigación Clínica S.A. de C.V. ( Site 0729), Cuauhtémoc, Ciudad de México

Instituto Nacional de Enfermedades Neoplasicas ( Site 0141), Lima

Hospital Beatriz Angelo ( Site 0374), Loures

Inst. Portugues de Oncologia de Lisboa Francisco Gentil EPE ( Site 0372), Lisbon

Hospital da Luz ( Site 0373), Lisbon

CHLN Hospital Santa Maria ( Site 0376), Lisbon

Inst. Portugues de Oncologia de Porto Francisco Gentil EPE ( Site 0371), Porto

MedEuropa Bucuresti - Centru de Radioterapie-Oncology ( Site 0400), Bucharest

S.C.Focus Lab Plus S.R.L ( Site 0395), Bucharest

Asan Medical Center ( Site 0623), Songpagu

Severance Hospital Yonsei University Health System ( Site 0624), Seoul

Samsung Medical Center ( Site 0622), Seoul

Korea University Guro Hospital ( Site 0621), Seoul

Memorial Ankara Hastanesi ( Site 0461), Ankara

Aberdeen Royal Infirmary ( Site 0474), Aberdeen

Cambridge University Hospitals NHS Trust ( Site 0477), Cambridge

Royal Free Hospital ( Site 0702), London

ROYAL MARSDEN HOSPITAL (CHELSEA) ( Site 0283), London

Hammersmith Hospital-Medical Oncology ( Site 0471), London

Nottingham University Hospitals NHS Trust ( Site 0476), Nottingham

Royal Marsden Hospital (Sutton) ( Site 0281), Sutton

University College Hospital NHS Foundation Trust ( Site 0701), London

The Christie NHS Foundation Trust ( Site 0282), Manchester

Mount Vernon Hospital ( Site 0478), Northwood