scholarly journals Difficulty in diagnosing mild cases of COVID‐19 without respiratory symptoms during the Novel Coronavirus Pandemic: Careful monitoring needed for patients with persistent upper gastrointestinal symptoms

2020 ◽  
Vol 8 (12) ◽  
pp. 2787-2790
Author(s):  
Hiroaki Saito ◽  
Akihiko Ozaki ◽  
Yasuhiro Mizuno ◽  
Kozo Todo
1991 ◽  
Vol 23 (4) ◽  
pp. 403-406 ◽  
Author(s):  
Kyösti Ala-Kaila ◽  
Pekka Vaajalahti ◽  
Anna-Liisa Karvonen ◽  
Maarit Kokki

2016 ◽  
Vol 8 (4) ◽  
pp. 295-323 ◽  
Author(s):  
H Jervoise N Andreyev ◽  
Ann C Muls ◽  
Clare Shaw ◽  
Richard R Jackson ◽  
Caroline Gee ◽  
...  

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