function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Jarvis, Charlie', 2],
    ['Kirika, Paul & Parnmen, Sittiporn & Lumbsch, Thorsten', 2],
    ['Leavitt, Steven D. & Fernandez-Mendoza, Fernando', 6],
    ['Lee, Beeyoung Gun & Hur, Jae-Seoun', 3],
    ['Li, Lijuan & Zhang, Yanyun & Printzen, Christian', 2],
    ['Papong, Khwanruan & Nayaka, Sanjeeva & Lumbsch, H. Thorsten', 2],
    ['R, Jeanne dos & Silva, eis & Aptroot, André & E, Marcela', 15],
    ['Sokoloff, Paul C. & Freebury, Colin E. & Hamilton, Paul B.', 2],
    ['Stepanova, Dace & Moisejevs, Rolands & Nitcis, Ma ris', 7],
    ['Svensson, Måns & Westberg, Martin', 1],
    ['Szczepanska, Katarzyna & Rodriguez-Flakus, Pamela', 1],
    ['Wijayawardene, Nalin N. & Dai, Dong-Qin & Premarathne, Bhagya M.', 1],
    ['Zhang, Yanyun & Yin, Yujiao & Wang, Lun & Printzen, Christian', 2],
    ['van den Boom, Pieter P. G. & Clerc, Philippe & Ertz, Damien', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=47)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);