function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alberto T. Barrion & Aimee Lynn A. Barrion-Dupo', 3],
    ['Chen Zhang', 1],
    ['Dean, David Allen', 1],
    ['Gao, Cai-Xia & Li, Shu-Qiang', 7],
    ['Gonzaga, Marcelo O. & Leiner, Natália O. & Santos, Adalberto J.', 1],
    ['Lin, Yejie & Wu, Lingbing & Cai, Ducheng & Li, Shuqiang', 2],
    ['Marusik, Yuri M. & Koponen, Seppo', 1],
    ['Milano, Filippo & Mammola, Stefano & Rollard, Christine', 1],
    ['Murthappa, Prashanthakumara S. & Malamel, Jobi J.', 1],
    ['Zhang, Bao-Shi & Zhang, Feng', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=21)',
    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);