function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Harapan, Try Surya & Tan, Wei Harn', 1],
    ['Jarvis, Charlie', 1],
    ['Markgraf, Friedrich', 2],
    ['Ngoc, Nguyen Van & Binh, Hoang Thi & Nagahama, Ai', 3],
    ['Ngoc, Nguyen Van & Dung, Luong Van & Tagane, Shuichiro', 1],
    ['Nguyen Van, Ngoc & Nguyen Viet, Hung & Hoang Thi, Binh', 1],
    ['Sinbumroong, Aroon & Rueangruea, Sukid & Teerawatananon, Atchara', 1],
    ['Soepadmo, Engkik', 3],
    ['Strijk, Joeri S. & Sirimongkol, Sukontip & Rueangruea, Sukid', 1],
    ['Zhang, Miao & Zhang, Xiao-Hui & Shi, Shi & Chen, Bing-Hua', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=15)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);