function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chamutiová, Tímea & Hamerlík, Ladislav & Bitušík, Peter', 3],
    ['Chen, Jinxian & Zhang, Ruilei', 3],
    ['Cranston, Peter S. & Martin, Jon & Spies, Martin', 4],
    ['Hazra, Niladri & Sanyal, Kaushik & Brahma, Shubhranil', 3],
    ['Mukherjee, Tuhar & Mukherjee, Bindarika & Hazra, Niladri', 8],
    ['Niitsuma, Hiromi', 8],
    ['Oyewo, Emmanuel Adeoye & Saether, Ole A.', 63],
    ['Pinho, Luiz Carlos & Silva, Fabio Laurindo Da', 5],
    ['Saether, Ole A. & Andersen, Trond & Pinho, Luiz C.', 13],
    ['Shimabukuro, Erika Mayumi & Trivinho-Strixino, Susana', 5],
    ['Tasdemir, Ayse & Akyildiz, Gurcay Kivanc', 15],
    ['Yamamoto, Nao & Hirowatari, Toshiya & Yamamoto, Masaru', 4],
    ['Yamamoto, Nao & Yamamoto, Masaru', 4],
    ['Zhang, Ruilei & Song, Chao & Qi, Xin & Wang, Xinhua', 193],
    ['Zhang, Ruilei & Wang, Xinhua', 17],
    ['Other (29)', 47]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=395)',
    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);