function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Costanzo, Luca Giuseppe & Marletta, Giuliana', 2],
    ['Doweld, Alexander B.', 1],
    ['Fang, Kun-Peng & Nan, Fang-Ru & Feng, Jia & Lv, Jun-Ping', 1],
    ['Jarvis, Charlie', 3],
    ['Malicky, H.', 3],
    ['Mey, Wolfram & Malicky, Hans', 1],
    ['Oláh, János & Johanson, Kjell Arne', 6],
    ['Quiroz-González, Nataly & Ponce-Márquez, Ma. Edith', 2],
    ['Resendiz, María Luisa Núñez & Sentíes, Abel & Dreckmann, Kurt M.', 1],
    ['Rossignolo, Natalia L. & Vis, Morgan L. & Paiano, Monica O.', 12],
    ['Rota, Emilia & Wang, Hongzhu & Erséus, Christer', 3],
    ['Schneider, Craig W. & Popolizio, Thea R. & Spagnuolo, Dylan S.', 2],
    ['Zhu, You-An & Zhu, Min & Wang, Jun-Qing', 1],
    ['de Clerck, Olivier & Coppejans, Eric & Schils, Tom', 7]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=45)',
    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);