ACKNOWLEDGEMENTS
The authors would like to thank Professor Takeshi Sekine, who is one of the pioneers in the initiation of investigations in Thailand. We would also like to thank the members of the Thai Macrothrombocytopenia Group, consisting of Somjai Kanjanapongkul from Queen Sirikit National Institute of Child Health, Bangkok, Thirachit Chotsampancharoenfrom Prince of Songkla University, Songkhla, Chanchai Trivareefrom Phramongkutklao Hospital, Bangkok, Siranee Wongruangsri from Lampang Hospital, Lampang, Pacharapan Surapolchai from Thammasart University, Bangkok, Sumonmaln Klamchuen from Sunpasitthiprasong Hospital, Ubon Ratchathani, Saranya Busakornruangrat from Somdejprapinklao Hospital, Bangkok, Kittima Kanchanakamhaeng from Sawanpracharak Hospital, Nakhon Sawan and Nattaporntira Phalakornkul from Bhumibol Adulyadej Hospital, Bangkok. This study is supported by the Multicenter Research Grant from the Thai Society of Hematology