function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alonso, G. M.', 1],
    ['Jung, Tae Won & Kim, Min-Seop & Soh, Ho-Young', 1],
    ['Othaitz, Junkal Peña & Sorbe, Jean Claude', 1],
    ['Verheye, Marie L. & D, Cédric & D, Udekem & Acoz', 8],
    ['Wang, Yan-Rong & Sha, Zhong-Li & Ren, Xian-Qiu', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=13)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 5, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);