function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abdel-Dayem, Mahmoud S. & Rasool, Iftekhar & Elgharbawy, Ali A.', 1],
    ['Anichtchenko, Alexander', 1],
    ['Azadbakhsh, Saeed & Nozari, Jamasb', 1],
    ['Azadbakhsh, Saeed & Wrase, David W.', 2],
    ['Chapman, Anna Nicola', 2],
    ['Guéorguiev, B.', 1],
    ['Hristovski, Slavčo & Guéorguiev, Borislav', 3],
    ['Kataev, Boris M. & Wrase, David W.', 2],
    ['Kostova, Rumyana & Gueorguiev, Borislav', 6],
    ['Pilon, Nicola & Cardarelli, Elisa & Bogliani, Giuseppe', 2],
    ['Samin, N. & Sakenin, H. & Kesdek, M. & Imani, S.', 2],
    ['Serrano, José', 2],
    ['W, David & M, Boris', 6],
    ['Wrase, DW', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=33)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 14, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);