function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alves, Maria De Lourdes & Ramos-Porto, Marilena', 1],
    ['Burton, T. E. & Davie, P. J. F.', 6],
    ['Chan, Tin-Yam', 1],
    ['Genis-Armero, Rebeca & Guerao, Guillem & Abelló, Pere', 1],
    ['González, José A.', 1],
    ['Holthuis, Lipke B.', 34],
    ['Leach, William Elford', 1],
    ['Lund, Niels Tonder', 1],
    ['Mantelatto, Fernando L. & Al, Et', 5],
    ['Palero, Ferran & Genis-Armero, Rebeca & Hall, Michael R.', 1],
    ['Yang, Chien-Hui & Chan, Tin-Yam', 2],
    ['Yang, Chien-Hui & Chen, Shiung & Chan, Tin-Yam', 1],
    ['Yang, Chien-Hui & Lin, Chia-Wei & Chan, Tin-Yam', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=60)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);