function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alencar, Jeronimo & Gil-Santana, Hélcio Reinaldo', 1],
    ['Keith Snow', 2],
    ['Khalin, A. V. & Aibulatov, S. V.', 1],
    ['Kirik, Heli & Tummeleht, Lea & Kurina, Olavi', 1],
    ['Merabti, B. & Boumaza, M. & Ouakid, M. L.', 1],
    ['Rozo-Lopez, Paula & Mengual, Ximo', 16],
    ['Telfer, Angela C & Young, Monica R & Quinn, Jenna & Perez, Kate', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=23)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);