function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alberto T. Barrion & Aimee Lynn A. Barrion-Dupo', 1],
    ['Baert, L.', 1],
    ['Candek, Klemen & Gregoric, Matjaz & Kostanjsek, Rok', 2],
    ['Crespo, Luis C & Domenech, Marc & Enguidanos, Alba', 3],
    ['Dean, David Allen', 4],
    ['Deltshev, Christo & Komnenov, Marjan & Blagoev, Gergin', 2],
    ['Levy, Gershom', 1],
    ['Ono, Hirotsugu', 1],
    ['Paschetta, Mauro & Christille, Claretta & Marguerettaz, Fabio', 1],
    ['Seropian, Armen & Bulbulashvili, Natalia & Krammer, Hans-Joachim', 1],
    ['Tang, Guo & Li, Shu-Qiang', 7],
    ['Tang, Guo & Li, Shuqiang', 12],
    ['Telfer, Angela C & Young, Monica R & Quinn, Jenna & Perez, Kate', 1],
    ['Yang, Weicheng & Yang, Jinxiong & Zhang, Jianshuang & Yu, Hao', 2],
    ['Zhang, Rui & Zhang, Feng', 8],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=49)',
    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);