function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ansari, Kapuli Gani Mohamed Thameemul & Guidi, Loretta', 1],
    ['Apostolov, Apostol', 5],
    ['Back, Jinwook & Lee, Wonchoel', 2],
    ['Boonyanusith, Chaichat & Saetang, Thanida & Wongkamheng, Koraon', 5],
    ['Bruno, Maria Cristina & Cottarelli, Vezio', 3],
    ['Edward', 2],
    ['Fuentes-Reines, Juan Manuel & Suarez-Morales, Eduardo', 3],
    ['Gheerardyn, Hendrik & Fiers, Frank & Vincx, Magda', 12],
    ['Gómez, S. & Morales-Serna, F. N.', 10],
    ['Gómez, Samuel & Nazari, Fatemeh', 4],
    ['Huys, Rony', 3],
    ['Huys, Rony & Lee, Jimin', 7],
    ['Huys, Rony & Lee, Wonchoel', 7],
    ['Karaytuğ, Süphan', 3],
    ['Song, Sung Joon & Lee, Sang-kyu & Kim, Mijin & George, Kai Horst', 4],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=77)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);