{{Cite journal| doi = 10.1136/bmjopen-2021-054946| volume = 12| issue = 5| pages = –054946| last1 = Rungreangkulkij| first1 = Somporn| last2 = Ratinthorn| first2 = Ameporn| last3 = Lumbiganon| first3 = Pisake| last4 = Zahroh| first4 = Rana Islamiah| last5 = Hanson| first5 = Claudia| last6 = Dumont| first6 = Alexandre| last7 = de Loenzien| first7 = Myriam| last8 = Betrán| first8 = Ana Pilar| last9 = Bohren| first9 = Meghan A.| title = Factors influencing the implementation of labour companionship: formative qualitative research in Thailand| journal = BMJ Open| date = 2022-05-01}}