function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ariyawansa, Hiran A. & Kang, Ji-Chuan & Alias, Siti A.', 1],
    ['Devadatha, Bandarupalli & Mehta, Nikita', 2],
    ['Dissanayake, Lakmali S. & Marasinghe, Diana S.', 1],
    ['Htet, Zin Hnin & Tibpromma, Saowaluck & Mapook, Ausana', 1],
    ['Karunarathna, Anuruddha & Phookamsak, Rungtiwa', 2],
    ['Liu, Ning-Guo & Liu, Jian-Kui & Sun, Ya-Ru', 1],
    ['Si, Hong-Li & Zheng, Xiao-Xiao & Li, Xin-Chao & Su, Yue-Min', 2],
    ['Tennakoon, Danushka S. & Thambugala, Kasun M.', 8],
    ['Thambugala, Kasun M. & Camporesi, Erio & Ariyawansa, Hiran A.', 1],
    ['Wijayawardene, Nalin N. & Dai, Dong-Qin & Premarathne, Bhagya M.', 2],
    ['Wijesinghe, Subodini N. & Wang, Yong & Zucconi, Laura', 2],
    ['Yang, Chun-Lin & Xu, Xiu-Lan & Wanasinghe, Dhanushka N.', 2],
    ['de Medeiros, Lívia S. & Abreu, Lucas M. & Nielsen, Anita', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=26)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);