function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alharbi, Samah A. & Al-Qthanin, Rahmah N.', 8],
    ['Heiduk, Annemarie', 2],
    ['Heiduk, Annemarie & Crouch, Neil R. & Styles, David G. A.', 4],
    ['Heiduk, Annemarie & Styles, David G. A.', 3],
    ['Heiduk, Annemarie & Styles, David G. A. & Meve, Ulrich', 1],
    ['Jarvis, Charlie', 2],
    ['Kishor, Kamal & Rawat, Gopal S. & Samant, Sher S.', 1],
    ['Lin, Yun & Bi, Hai-Yan & Sun, Jun & Sun, Qian', 2],
    ['Linnaeus, Carolus', 2],
    ['Nacoulma, Blandine M. I. & Schmidt, Marco & Hahn, Karen', 3],
    ['Romero, Giovanna E.', 1],
    ['Schlechter, Fridrich Richard Rudolf', 1],
    ['Styles, David G. A. & Meve, Ulrich', 1],
    ['Wu, Zhi-Kun & Cai, Jie & Cai, Lei & Liu, De-Tuan', 1],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=33)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);