nurul adilla hayat jamaluddin, petrick periyasamy, chee lan lau, sasheela ponnampalavanar...tg mohd ikhwan tg abu bakar sidik, ramliza ramli, toh leong tan, najma kori, mei kuen yin, nur jannah azman, rodney james, karin thursky, isa naina mohamed.  (2024).  assessment of antimicrobial prescribing patterns, guidelines compliance, and appropriateness of antimicrobial prescribing in surgical-practice units: point prevalence survey in malaysian teaching hospitals.  - frontiers in pharmacology.  1-14. 

andrea lay-hoon kwa, brigitte rina aninda sidharta, do ngoc son, kapil zirpe, petrick periyasamy, rongpong plongla, subramanian swaminathan, tonny loho, vu van giap & anucha apisarnthanarak.  (2024).  clinical utility of procalcitonin in implementation of procalcitonin-guided antibiotic stewardship in the south-east asia and india: evidence and consensus-based recommendations.  - expert review of anti-infective therapy.  45-48. 

p. periyasamy, p. shanmugam, n. kori, u.a. zainulabid.  (2023).  acute pyelonephritis with candidemia caused by fluconazole resistant candida albicans.  - international journal of infectious diseases.  S2. 

u. salamah faisal, u.a. zainulabid, n. kori, p. periyasamy, t.m.n. khaithir.  (2023).  vibrio cholera o1 ogawa bacteremia with extraintestinal manifestation.  - international journal of infectious diseases.  S7. 

u.a. zainulabid, a. aslam, m. hussain, i. ibrahim, p. periyasamy, n. kamarudin, h.f. ahmad.  (2023).  whole genome sequence of sars-cov-2 from covid-19 acquired hemophilia patient.  - international journal of infectious diseases.  S14. 

wahab, a.a, nurazizah, s.m.a, ding, c.h, muttaqillah, n.a.s, nordashima, a.s, kori, n, periyasamy, p.  (2023).  non-bacteremia liver abscess caused by burkholderia pseudomallei from a tertiary teaching hospital in malaysia: a case report and literature review.  - tropical biomedicine.  290-294. 

ly sia loong, pauline siew mei lai, nurul adilla hayat jamaluddin, isa naina-mohamed, petrick periyasamy, chee lan lau, karin thursky, rodney james, sasheela ponnampalavanar.  (2022).  comparing the appropriateness of antimicrobial prescribing among medical patients in two tertiary hospitals in malaysia.  - journal of infection in developing countries.  1877-1886. 

alex y. c. sim, ainal a. naffi, tang s. fai, najma kori, wan a. w. zaidi, petrick periyasamy, norshamsiah md din, mushawiahti mustapha, ayesha mohd zain.  (2022).  bilateral intermediate uveitis in a healthy teenager with the multisystem inflammatory syndrome in children secondary to covid-19 infection.  - journal of medical virology.  1269-1271. 

najma kori, farida islahudin, muhammad yusuf zawir abd rahim, petrick periyasamy, noraida mohamed shah, ernieda md hatah, lau chee lan.  (2022).  corticosteroid effectiveness among hospitalised covid-19 patients in malaysia.  - journal of infection in developing countries.  1390-1397. 

juen kiem tan, dalleen leong, hemalatha munusamy, nor hazwani zenol ariffin, najma kori, rozita hod, petrick periyasamy.  (2021).  the prevalence and clinical significance of presymptomatic covid-19 patients: how we can be one step ahead in mitigating a deadly pandemic.  - bmc infectious diseases.  1-10. 

xiong khee cheong, juen kiem tan, zarrin kang, najma kori, petrick ramesh periyasamy.  (2024).  a difficult case of cardio-cerebral infarction syndrome with left ventricular thrombus.  - cureus.  1-6. 

nurul adilla hayat jamaluddin, petrick periyasamy, chee lan lau, sasheela ponnampalavanar...tg mohd ikhwan tg abu bakar sidik, ramliza ramli, toh leong tan, najma kori, mei kuen yin, nur jannah azman, rodney james, karin thursky, isa naina mohamed.  (2024).  assessment of antimicrobial prescribing patterns, guidelines compliance, and appropriateness of antimicrobial prescribing in surgical-practice units: point prevalence survey in malaysian teaching hospitals.  - frontiers in pharmacology.  1-14. 

ng boon hau, mohd imree azmi, nik nuratiqah na, low hsueh jing, soo chun ian, mas fazlin mj, azat azrai a, rose azzlinda o, petrick p tan hui jan, shahizon azura mm, wan nur nafisah wy, mohamed faisal ah, andrea ban yu-lin.  (2024).  the outcome of 12-week corticosteroid therapy in covid-19-related diffuse interstitial lung abnormalities.  - medical journal of malaysia.  296-305. 

nur nadhirah mesran, suraya abdul-razak, mazapuspavina md yasin, petrick periyasamy, wan syahira ellani wan ahmad kammal, haizlene abd halim.  (2024).  progressive multifocal leukoencephalopathy in hiv with atypical presentation and prognostic outcome causing diagnostic dilemma: a case report.  - hiv & aids review.  96-102. 

andrea lay-hoon kwa, brigitte rina aninda sidharta, do ngoc son, kapil zirpe, petrick periyasamy, rongpong plongla, subramanian swaminathan, tonny loho, vu van giap & anucha apisarnthanarak.  (2024).  clinical utility of procalcitonin in implementation of procalcitonin-guided antibiotic stewardship in the south-east asia and india: evidence and consensus-based recommendations.  - expert review of anti-infective therapy.  45-48. 

victor ke lim, zamberi sekawi, yasmin a malik, ariza adnan, ilina isahak, zetti zainol rashid, ooi mong how, suresh kumar chidambaram, s fadilah, zakuan zaini deris..  (2020).  guidelines for adult immunisation.  - .  276. 

antimicrobial stewardship committee hctm ukm.  (2018).  hctm ppukm surgical prophylaxis guide 2018.  - .  73. 

chan gn, evelyn hjw, farah wt, izyan di, kong sh, lai yk, lau cl, leong sl, loong ls, michelle thp, pau kb, sarah ar, shairyzah ah, supadhara r, andrea byl, kong wy, petrick p, rizna ac.  (2013).  handbook of renal dose adjustment for common antimicrobials.  - .  17. 

guidelines development group.  (2012).  management of tuberculosis.  - .  97. 

anti-infective guideline development group 2011/2012.  (2012).  ppukm anti-infective guideline 2012.  - .  *. 

neoh hui min;zalina binti ismail;sharifah azura binti salleh;lau chee lan;sunita binti sulaiman;petrick @ ramesh a/l k periyasamy;muttaqillah najihan bin abdul samat;tan toh leong;nor azila binti muhammad azami.  (2025).  staying ahead of the antimicrobial resistance (amr) curve: genomics surveillance and phenotypic investigation of methicillin-resistant staphylococcus aureus (mrsa) in hospital canselor tuanku muhriz (hctm).  - .  . 

cheelan lau, petrick periyasamy, kiew bing pau, shue hong kong, farah waheeda tajurudin, sheah lin ghan, nur jannah azman, stephanie wai yee tan, muhammad nazrin ibrahim, xiong khee cheong, ummu afeera zainulabid, fara rahidah hussin, toh leong tan, hui-m.  (2024).  improved timelines in antibiotic optimization: impact of pharmacists in bacteraemia stewardship.  - 2nd pharmcare symposium.  28. 

nurul dayana zainudin, siti norlia othman, norzuriza mohd rais, hui-min neoh, meng ling moi, najma kori, petrick periyasamy & nor azila muhammad azami.  (2024).  seroprevalence of neutralizing antibodies against denv-1 and denv-4 among patients admitted to a teaching hospital in kuala lumpur.  - 7th asia dengue summit 2024.  82. 

nurul syafiqah abdul kadir, siti norlia othma, norzuriza mohd rais, hui-min neoh, meng ling moi, najma kori, petrick periyasamy and nor azila muhammad azami.  (2024).  genomic surveillance of dengue virus in patients admitted to a teaching hospital in kuala lumpur, malaysia from 2022 to 2023.  - 7th asia dengue summit.  81. 

ummu afeera zainulabid , muhammad khidhir kamil, fatin farahani ramzah, lee chen dar, , mohamad azim md idris , lenny suryani safri, najma kori, petrick periyasamy.  (2023).  a vascular graft infection nightmare secondary to candida albicans.  - 33rd eccmid.  P3377.