function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Calabon, Mark S. & Jones, E. B. Gareth & Pang, Ka-Lai', 1],
    ['Cobos-Villagran, Aurora & Valenzuela, Ricardo', 3],
    ['Cobos-Villagrán, Aurora & Raymundo, Tania', 1],
    ['Gapp, I. Wesley & Lieberman, Bruce S.', 3],
    ['Naziazeno, Leticia Muxfeldt & Aptroot, André', 2],
    ['Ren, Guang-Cong & Wanasinghe, Dhanushka N. & Jeewon, Rajesh', 3],
    ['Senwanna, Chanokned & Suwannarach, Nakarin', 4],
    ['Wijayawardene, Nalin N. & Dai, Dong-Qin & Premarathne, Bhagya M.', 1],
    ['Xu, Xiu-Lan & Xiao, Qian-Gang & Yang, Chun-Lin & Jeewon, Rajesh', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=21)',
    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);