function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aksornneam, Akrachai & Rujirawan, Attapol & Yodthong, Siriporn', 1],
    ['Chandramouli, S. R.', 1],
    ['Chen, Ze-Ning & Shi, Sheng-Chao & Vogel, Gernot & Ding, Li', 4],
    ['Daudin, F. M.', 1],
    ['Figueroa, Alex & Low, Martyn E. Y. & Lim, Kelvin K. P.', 3],
    ['Fukuyama, Ryobu & Fukuyama, Ibuki & Kurita, Takaki', 1],
    ['Hakim, Jonathan & Trageser, Scott J. & Ghose, Animesh', 2],
    ['Syafiq, Muhamad Fatihah & Badli-Sham, Baizul Hafsyam', 1],
    ['Zijia, Hong & Anuar, Shahrul & Grismer, L. Lee', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=15)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);