function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ahmadi, Marzieh & Esfandiari, Mehdi & Muilwijk, Jan', 1],
    ['Assmann, Thorsten & Boutaud, Esteve & Buse, Joern', 3],
    ['Aston, Paul', 1],
    ['Azadbakhsh, Saeed & Nozari, Jamasb', 1],
    ['Bates, Henry Walter', 3],
    ['Blackburn, T.', 15],
    ['Blackburn, Thomas', 3],
    ['Bonelli, Franco Andrea', 1],
    ['Bousquet, Yves', 5],
    ['Broun, Thomas', 2],
    ['Della Rocca, Francesca & Stefanelli, Silvia & Cardarelli, Elisa', 1],
    ['Hristovski, Slavčo & Guéorguiev, Borislav', 1],
    ['Kostova, Rumyana & Gueorguiev, Borislav', 2],
    ['Pilon, Nicola & Cardarelli, Elisa & Bogliani, Giuseppe', 2],
    ['White, Adam', 3],
    ['Other (4)', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=48)',
    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);