function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Asahina, Syoziro', 2],
    ['Joshi, Shantanu & Kunte, Krushnamegh', 1],
    ['Kompier, Tom & Karube, Haruki & Futahashi, Ryo & Phan, Quoc Toan', 12],
    ['M‘Lachlan, Robert', 1],
    ['Zhang, Hao-Miao & Cai, Qing-Hua', 3],
    ['Zhang, Hao-Miao & Yeh, Wen-Chi & Tong, Xiao-Li', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=21)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 6, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);