Muhammad Azrai Abu, Chew Kah Teik, Nur Azurah Abdul Ghani, Mohammad Shawal Faizal, Chai S. Ngiu , Nor Azlin Mohd Ismail.  (2019).  Chest pain in pregnancy: a false alarm.  - Gazzetta Medica Italiana Archivio per le Scienze Mediche.  157-160. 

Kah Teik Chew, Muhammad Azrai Abu, Mohd Faizal Ahmad, Nur Azurah Abdul Ghani.  (2018).  Bilateral mature cystic teratoma masquerading as an ectopic pregnancy: a case report and review of the literature.  - Journal of Gynecologic Surgery.  252-254. 

Chew Kah Teik, Norsaadah Salim, Muhammad Azrai Abu, Abdul Kadir Abdul Karim.  (2018).  Knowledge, attitudes and practice regarding copper intrauterine contraceptive devices among doctors in Malaysia.  - BMJ Sexual and Reproductive Health (Journal of Family Planning and Reproductive Health Care).  . 

Chew Kah Teik, Muhammad Azrai Abu, Yulianty Arifuddin, Nor Azlin Mohamed Ismail, Noor Ain Mohd Nasir, Fazarina Mohammed, Nur Azurah Abdul Ghani.  (2017).  Ectopic adrenal tissue associated with borderline mucinous cystadenoma of ovary: a case report with review of the literature.  - Hormone Molecular Biology and Clinical Investigation.  1-5. 

ABDUL KADIR ABDUL KARIM , MUHAMMAD AZRAI ABU, BUVANES CHELLIAH, Zainul RASHID MOHD RAZI , MOHD HASHIM OMAR , HANITA OTHMAN , Zuraidah CHE MAN.  (2017).  Maternal Thyroid Function in Women Undergoing Controlled Ovarian Hyperstimulation during in-vitro Fertilization and its Relation to Reproductive outcome.  - Minerva Ginecologica.  431-437. 

Muhammad Azrai Abu, Nur Azurah Abdul Ghani, Lim Pei Shan, Aqmar Suraya Sulaiman, Mohd Hashim Omar, Mohd Hisam Muhamad Ariffin, Azmi Baharuddin, Shuhaila Shohaimi, Zuraidah Che Man.  (2017).  Do exercises improve back pain in pregnancy?.  - Hormone Molecular Biology and Clinical Investigations.  .